That sounds like the exact problem I had. See the thread below that I started 01-08-20, Can't Respond or select..... Last reply 01-29-20

IBJoel found that my account was "on the wrong forum skin" whatever that means. I'm just fine now on each machine. Note: I also figured out to effectively clear my cache on each machine. That cleared a couple of minor issues (ex:mentions not working) that had started long ago. Between that and IBJoel's trouble shooting BF works very well these days.

Good luck.