This is what you should do:
Record the computer doing a blockstring you think is a frame trap. Play it back and try everything in your power to mash out of it. If you can, it's not a frame trap. Testing things yourself is one of the best ways to confirm if something works or not. This works for both sides. Record an opponent's pressure strings in training, play it back and see what you can do after it. It'll help you learn some matchups.
If you're getting hit out of certain things, test it out. Maybe it's the way you timed it, maybe it's not a frame trap at all, maybe it's just lag. You don't know until you can confirm it.