Pi 3A+ connection problem

[zaxxon-hh]

Hi there ,first of all a very nice projekt . Thank you very much :-)

i have trouble with the WIFI Connection. I can ping the MT32 but there is no connection on the router tab shown .

FTP access is possible but only short , always a reconnect will be needed with the User Name again!

Tested with WinSCP and DOS Windows ftp...

i´ve tried a PI OS to be sure the Pi is not faulty. This is working great . SSH Connection very stable.

Any ideas what could be the reason for my problems ?

kind regard
Zaxxon-HH