# PrestaShop Support UK

Source: https://dijitulsupport.co.uk/prestashop-support/
Updated: 2026-10-10

> dijitul support fixes and maintains PrestaShop stores for UK businesses: module conflicts, checkout and payment errors, cache and override problems, and upgrades from PrestaShop 1.6 or 1.7 to versions 8 and 9. Care plans start at £25 a month + VAT, one-off fixes are £45 an hour + VAT, and major upgrades are quoted.

## Common symptoms

- A blank page or HTTP 500 error after installing a module
- Changes to the theme not appearing because of cache
- Customers cannot complete checkout or payment module errors
- 1-Click Upgrade fails part way through
- Back office very slow or logging you out
- Products missing from category pages or search

## Key facts

- PrestaShop 9.0.0 became available in July 2025, built on Symfony 6.4
- PrestaShop 9 officially supports PHP 8.1 to 8.4
- Module compatibility checked before every upgrade
- Class overrides and theme customisations reviewed for upgrade safety
- Debug mode, cache and Smarty compile problems diagnosed
- £45 an hour + VAT ad hoc; plans from £25 a month + VAT; upgrades quoted

## PrestaShop versions in use

PrestaShop is popular with European and UK retailers who want a self-hosted shop without WooCommerce. Many stores still run 1.6 or 1.7, which are well past their prime and rely on old PHP versions. PrestaShop 8 brought PHP 8 support, and PrestaShop 9, available since July 2025, moves to Symfony 6.4, a back office rendered fully in Symfony, a new Admin API and the Hummingbird theme. It requires PHP 8.1 or higher.

Each of those jumps can break modules and themes, so upgrades need planning rather than a click in the back office.

## PrestaShop faults we fix

- **Blank page or 500 error:** we turn on debug mode (*_PS_MODE_DEV_* in *config/defines.inc.php*) on a safe copy or briefly on live to see the real error, then disable or fix the faulty module.

- **Changes not showing:** Smarty compile cache, CCC (combine, compress, cache) settings or a CDN serving old files. We clear *var/cache* and set cache options sensibly.

- **Override conflicts:** modules that override core classes in */override* can clash with each other or break after an upgrade. We review them and remove stale overrides.

- **Checkout and payment errors:** payment modules that are not updated for your PrestaShop version, or carrier and zone settings that leave customers with no shipping option.

- **Failed upgrades:** 1-Click Upgrade (autoupgrade module) timing out on shared hosting, leaving a half-upgraded shop. We restore from backup and upgrade properly.

## Upgrading PrestaShop safely

- Full backup of files and database, tested on a staging copy.

- List every module and theme, and check the developer's compatibility with the target version on PrestaShop Addons or the vendor site.

- Upgrade the staging copy, step by step for very old versions.

- Fix or replace incompatible modules, rebuild theme customisations if moving to a new theme.

- Test product pages, cart, checkout, payments, order emails and invoices.

- Repeat on live during a quiet period.

Upgrades from 1.6 are often closer to a rebuild, and moving to another platform may make sense. These are quoted. See [website migration support](https://dijitulsupport.co.uk/website-migration-support/).

## Security and maintenance

PrestaShop sites are targeted through vulnerable third-party modules more than the core itself. We keep modules updated, remove unused ones, rename the admin folder if it has been left guessable, check employee accounts and permissions, and enforce HTTPS across the shop. If your shop has been hacked or customers report card fraud after buying from you, treat it as urgent: see [hacked website repair](https://dijitulsupport.co.uk/hacked-website-repair/).

## Speed and day-to-day shop management

Slow PrestaShop shops usually come down to a few things: too many front-office modules hooked into every page, debug mode left on, Smarty set to recompile templates on every request, or large unoptimised product images. We check Advanced Parameters > Performance, disable modules that are installed but unused, and regenerate image thumbnails at sensible sizes.

We also help with routine shop tasks that take time when you do not do them often: bulk product imports from CSV, setting up carriers and zones for UK and EU delivery, tax rules after a VAT change, customer group pricing, cart rules for promotions, and order status emails. On the Business and Complete plans these can come out of your included monthly hours.

## PrestaShop support prices

One-off PrestaShop fixes are **£45 an hour + VAT**, with a 30-minute minimum then 15-minute blocks. Our plans start at **£25 a month + VAT** for updates applied and checked, daily backups, uptime and security monitoring. **Business at £50 a month + VAT** adds an hour of fixes or changes each month and priority support. **Complete at £99 a month + VAT** gives three hours a month plus IT and Microsoft 365 helpdesk.

Major upgrades and migrations are quoted. See our [ecommerce support](https://dijitulsupport.co.uk/ecommerce-support/) overview or [get in touch](https://dijitulsupport.co.uk/contact/).

## FAQs

### Should I upgrade PrestaShop 1.7 to PrestaShop 9?

Yes, in time. PrestaShop 9 runs on Symfony 6.4 and supports PHP 8.1 to 8.4, while 1.7 relies on older PHP versions. The jump can break modules and themes, so dijitul audits compatibility and quotes the upgrade first.

### Why does my PrestaShop shop show a blank page?

It is usually a PHP fatal error from a module or override. Enabling debug mode shows the real error. dijitul can find and fix the cause, typically as an ad-hoc job at £45 an hour + VAT.

### Why are my PrestaShop theme changes not appearing?

Cached templates are the usual cause. Clearing the cache in Advanced Parameters > Performance, or the var/cache folder, normally fixes it. dijitul can also review cache and CCC settings so it stops recurring.

### Is the 1-Click Upgrade module safe?

It works on many shops but can time out on shared hosting or fail with incompatible modules. Always back up first. dijitul upgrades on a staging copy so a failed upgrade never affects your live shop.

### How much is PrestaShop support?

dijitul charges £45 an hour + VAT for one-off PrestaShop work, with a 30-minute minimum then 15-minute blocks. Monthly plans are £25, £50 or £99 a month + VAT. Major upgrades and migrations are quoted after an audit.

## Pricing and contact

Support plans from £25 a month + VAT, or £45 an hour + VAT for one-off fixes. Plans: Essential £25/month + VAT (Website software updates (core, plugins, themes) applied and checked, Daily backups, Uptime monitoring, Security monitoring); Business £50/month + VAT (Everything in Essential, 1 hour of fixes or changes every month, Priority support); Complete £99/month + VAT (Everything in Business, 3 hours of fixes or changes every month, IT and Microsoft 365 helpdesk for your team). Ad-hoc support is £45 an hour + VAT. The first 30 minutes are the minimum charge, then we bill in 15-minute blocks. Contact: 01623 650333, support@dijitul.uk, https://dijitulsupport.co.uk/contact/