Solved Removing kunena Version 6 Beta 3/4

removing kunena via kunena itself does not work.
do i kunena via extensions > manage delete remains
all kunena items exist in the database.

If you uninstall Kunena via the Joomla extension manager, the database and uploaded attachments and avatars remain. That's correct.
And if you uninstall Kunena via Kunena tools it should be all removed, along with the database. For me, it works both.

ha ok I will try again via the Kunena via Kunena tools with the Debug setting on maybe that difference could be
I have tried with various settings but can't remove the test version kunena 6 with the Uninstall Kunena tool
it also seems that uninstall tool is not loading everything right buttons and also the warning popup does not come up anywhere in kuena version 6 in my test
ps
I also tried Joomla 3.10.2 with kunena 5.2.6 and that goes well everything has been removed

Have you entered username and password before execute the process?
The difference between Joomla 3.10 and Joomla 4.0 is:
In Joomla 3.10 you don't need to enter username and password if you already logged in as Super User in the backend
In Joomla 4.0 you must nevertheless to enter the username and password before execute this process

But if you see the message "The Forum is currently offline for maintenance..." the installation is not complete.
Maybe therefore not all options working correct.

Ok, I saw it now. I've not noticed this issue, because I always use the Enter key instead of the execute button.
Press on your keyboard Enter after insert your username and password, then it works.

 thanks for the explanation I tried that and then kunena will be removed