I'm not the expert to solve your problem, but thanks for bringing my attention to telnet BBS's. I ran a BBS back in the early '80's, and it's pretty cool to see that some survive. (Fidonet! OMG!)

To one of your questions, though, I installed mTelnet on one of my Windows Vista boxes, and when I play Box Poker on Beck's BBS (under the name of Renaldo), I also do not see the suits displayed. It may be an issue with the BBS itself, not your tablet.