You can disable the new event editing layout using the first option on the events editing tab of the JEvents config.

It should look a lot better than your screenshot - it looks as though something is stripping out the UIKit JS or CSS from the page.

thanks geraint

now the save-button is back, but the tabbed view still won't work :-(

regards

Hello!
This is what it should look like ???

No - that isn't correct!!

Which browser are you using? Which backend Joomla template?

It looks like something is interfering with the CSS - would it be possible to get login access to the backend of your sites (add credentials on private site details tab below). If you are concerned about site privacy you could configure a new user group and create a user in this group as follows

Create new group as descendent of registered



In Joomla global config on the permissions tab set its permissions as follows



In the JEvents config on the permissions tabe set its permissions as follows (You MUST save the permissions after changing them on this screen!).



When logged in to the backend this is what this user would probably see (depends on your admin module permissions)



When accessing JEvents in the backend you'd see something lik,e

Is it possible that this is a problem? PHP Version 5.6.40

Database Collation utf8_general_ci
Database Connection Collation utf8mb4_general_ci
PHP Version 5.6.40
Web Server Apache
WebServer to PHP Interface cgi-fcgi
Joomla! Version Joomla! 3.9.21 Stable [ Amani ] 25-August-2020 15:00 GMT
Joomla! Platform Version Joomla Platform 13.1.0 Stable [ Curiosity ] 24-Apr-2013 00:00 GMT

Your PHP version is indeed a problem - I would suggest you re-install version 3.4.57 from the download area until you can get PHP upgraded.