well, there may be a higher force .... thanks a zillion!!!
well, after several attempts to start xeams manually or through the qnap app center - it's running again but now as 7.1 build 6090
found no errors related to "troubleshooting auto update" article - everything was just fine
several error messages in various logs - but nothing really suspicious
so, lets keep it running and receiving emails like heck
Thanks again ;-)