Very slow App and cannot create or join session anymore

[Martin Huber]

SOLVED

(Hopefuly).

I today called my ISP and asked them to switch me from DS Lite Tunnel to Full Dual Stack IPv4 / IPv6.
Such I have my own IPv4 address (not shared with anyone) - and now JamKazam is working again !
Let's hope, that this really is due to the Dual Stack, and not because just another route I now take with me actual IPs ...

We will see.

Thanks that far for your input and help!