Should have come off by now. You say your temps are good, did you bump it up to at least 70% for shed cycle? and if you are using a tank enclosure, is the humidity the same in all areas and not possibly lower on one end where the bp hangs out more?
Anyway's the bp will need help getting the shed off. Soak in luke warm water for 30 mins to an hour then let the bp run through a damp towel to slide the shed off, with the help of you massaging/rubbing gently.