Hi @tom_wobbekind ----- Thank you for your patience here.
Moving forward, our tech team has reviewed all of the provide materials (thank you again) and are seeing that RAATServer is starting up in your logs as expected as well as noting that nothing seems out of the ordinary in regard to the plugins you have. Which are all good signs.
This has definitely been a tricky one for us to pin down and my instinct is still telling me that this issue is related to some sort of security setting on the device (Antivirus app / firewall). I had another user this morning report almost the same exact issue and they confirmed that their AV app had taken an automatic update that changed some settings which caused the problem.
Apologies for sounding like a broken record, but may I very kindly ask you to confirm one more time that there are no active firewalls or antivirus application currently active on this device.
-Eric