BBSes with cursor navigation menus not working

[Chaniyth]

I sent you a PM with details about the problem, which turned out to be the WiModem232 responds too fast to the incoming data and the router/ISP ping times causing the issue.

Ah-ha! Indeed you did, my apologise, I did not notice the notification. Thanks for the clarification of what was going on and amazing effort of the fix to resolve it!