What's wrong with your template Dylan?
If I add anything in Custom code, the performance declines: the left column with the menu got bgd-color white, the color of text in main becomes #cad1da. And – very strange! – if I undo the modification the decline in performance stays that way.
Why is this? And how can I make some changes in custom code that will stick?
Joomla = 4.2.5, php - 8.1
Hi there!
Sorry for your experience.
The Dylan template is not compatible with PHP 8 yet, it will get the compatibility soon. You may try with PHP 7.4 for now. Here is our plan: https://www.joomshaper.com/blog/latest-php-compatibility-for-templates-and-extensions
And we are on the way of bringing the plan live. Here you will see some blogs about it:
https://www.joomshaper.com/blog/releases-updates
Best Regards
