Wrong network while sending USDT and ETH

Hi guys.

I made a stupid beginners mistake by transferring USDT and ETH from Binance to Swiss Borg wallet with using wrong network;

  1. While importing account to METAMASK, I have problems when pasting SWISS BORG’s address - writes "Ooops! sth went wrong - we couln’t import that private key. Anybody had the same problem? Am I doing sth. wrong? I’ve contacted the SB’s support but they won’t give me exact ETA so I want to try it myself.

2.The idea was to manually set up the wallet within METAMASK with BSC Network and catch the missing USDT in METAMASK’s wallet. Is possible?

Many thanks to all off you and sorry if I’ve missed the previous (same) topics.