Thanks for the question.
Does the motor start up but the drum isn't turning is that the problem.
The blower can have a sock caught in it, check the blower, heres the complete breakdown to help with the problem.
This is the blower, the top has to be lifted and the front removed the blower is on the right side on the floor.Theres a spring clip about 2 in from each corner use a flat screwdriver and push in at the clips this will release the top, remove the two screws that hold the front on , remove the front and set it aside, now you can clean out the blower if theres something in the blower
Thanks and God Bless.