i only use one type of cupcake liner but for some reason after baking it stop sticking to the paper. What did i do wrong. pls help i need to get to the end of this before it happens again. Thank you

Are you using the "normal" paper cupcake liners?

Are you removing the cupcakes from the cupcake pan immediately after removing them from the oven? If not, they can steam in the pan which loosens the liner.

HTH

i usually wait abpout a couple of mins, i never had this problem before

Not sure why this is happening but just a thought... if you are still doing things the same way and this problem is new it could be the manufacturer, they may have changed the way they make it, or could have been a bad batch of liners...