February 2019 - last edited February 2019
If you're suffering from the "unable to connect" after one match, try this solution that worked for me.
My router (technicolor) seemingly dislikes its own software to forward UDP ports.
I re-added all the UDP port forwarding using telnet instead, reset the modem and the problem was fixed. Uninterrupted matches.
Recommended you lookup your own router's IP and documentation, but for reference, commands for me were in the lines of:
telnet <your router ip>
:connection bind application=CONE(UDP) port=1024-1124
(and 18000,29900,37000-40000)
saveall
Hoping this helps someone.
Cheers!
May 2019
Thank you for sharing a possible workaround while the team is still looking into this. We really appreciate it!
July 2019