Originally Posted by
IamHis369
I would assume all indoor spin bikes would have the same pedals. That would make no sense if you couldn't use your shoes for different classes.
You should never assume.
So your problem may be because of a brand or type mismatch, or possibly misalignment which has you riding with the cleat beginning to unlatch.
I'd start by clipping the shoe to the pedal without your foot inside. If it's sloppy, you know there's a problem with the cleat. If it latches well without a foot, but not with, then maybe it's an alignment question.