Hi, alex2020
I identified the issue: your S5 template version is outdated. I have installed the latest Shape5 Vertex template on your site, which includes a significant upgrade:
- compatibility with Joomla 4.x and Joomla 5.x,
- compatibility with PHP 8.x,
- saving configurations inside the database instead of using the config.json file (to avoid potential loss of configurations),
- multiple other improvements.
Your site is now functioning correctly.
Please check and let us know if everything is working as expected.
Regards,