@sjun . . . sorry, can’t help your issue with the old server, but wanted to relate something I noticed just in the last day regarding BFD licensing. I’ve been using BFD3.5 almost every day for a while now, and every frigging time you launch it . . . it phones home for a license authorization. In the last day, that stopped . . . so clearly something has changed on their license servers.
I too rolled back to 3.4.5.28 a while ago. 3.5 is rubbish and a hostage situation. Pretty close to ‘abondoneware’ at this point. The familiar, “inMusic is where good software goes to die”.
On topic, I opened the old LM today and it loads up and shows it’s connected.I don’t have anything new to authorize or BFD hasn’t hiccuped requiring a re-auth for me recently, which it has done a couple of times in the past. My LM is v 3.0.6.22(2022). My Win 11 PC is old so I still have the old License Manager. Had BFD since v2.
I’m sorry this doesn’t solve your issue other than to say what version I have and it does load up and connect. Maybe check your firewall in case something chaged access out of the blue, like an update?