i can turn off the server and no I have not activated an autostart function

Waiting is required when your server crashes/is attacked/etc. so that it doesn’t stop properly.
This means that you don’t run server and wait, but stop it and wait.
Also, as @TS.ChrisR said, check if you don’t have any additional server instances running in background. I’m not a expert and I don’t really own a server, but maybe restating whole server (literal machine, not software) and then waiting these 2-3 hours (or preferably a bit more, maybe 4 hours) will fix this issue. If you don’t have any ideas, why not check it?
But be aware that you’re doing this on your own responsibility!
OK, I’m going to wait a couple of hours now respectively will see tomorrow if the problem is still there
thank you for your interest & help