If Chewy is not cleaned and you force the door open the strap/ribbon may break. This will void your WARRENTY as your chewy was not properly maintained. Do not force the door opened! Chewy needs to be cleaned.
Please watch cleaning video
Cleaning prevents and fixes the following problems
release buttons not releasing
push block not locking in the back position
difficulty in pulling back the push block
a dirty chewy will prevent the spring from pushing the herb into the blades