We are running a very old version of Toolset types, Version 2.3.5. In addition to this, we are also running the following PHP and WordPress versions:
WordPress 5.0.22
PHP 7.0
We are attempting to upgrade the site to the latest version of WordPress, however, to do this, we need to be on a minimum PHP version of 7.2.
The issue I have, is that when we upgrade the PHP version to 7.2, it breaks the Toolset Theme! ie, virtually all pages, especially the product pages. We have created a clone site to test our updates, but the clone always redirects the cone site back to the live site when viewing the product pages, so It is hard to test our updates. So we pushed the updates live and that is when we discovered the broken theme. Fast Hosts is our host and were able to push the site back thankfully, but I need some advice and help to resolve this and update our website.
I am confident that the issue may well be that we are using an old version of Toolset Types, upgrading this could fix the issue, however, if this isn't, I need to know if there is a way of going back as I do believe that updating to the new version on Toolset will update the site database file. Once this is updated, there would be no going back and I will break my site beyond repair.
Are you able to have a look at our website, I am happy to give you temporary access to our WordPress (please let me know what level you need).