someone with more technical skills than me will explain this better but with SPD not all pedals work with all SPD clips, so in trying different ones check the pedal directions/manual carefully.

Once I replaced worn clips at a different LBS who said "yeah, these'll work just as well". Could barely clip in, and was worse trying to get out! Yikes.

I took the shoes and bike back to my usual shop and was told the clips were wrong for my pedals so they have to match.