Hi Eugene,
I just recently upgraded to Trados 2021, so it maybe updated some package used by Business Manager, but now when I try to email invoices, the software times out. It says "Errors during sending: Operation has timed out." I'm at my brother's house for the holidays, so it could be related to changing Internet connections? However, I have a 200MBPS connection, so it shouldn't be.
If all else fails, I can send them via my email client, but I like sending the invoices through Business Manager.
Merry Christmas!
Casey