There are only a few reasons that machine would not heat. I’d like to know why you replaced the element? Was the element circuit open? Did you actually see a break in the coil? Often DIYers interpret poor performance or long dry times as a bad element; I’ve seen or heard this from customers 100’s of times so I’d like to know that the element coil was definitely open.
As the why it would not heat at all: open thermal cut off, lack of proper voltage, bad timer are all possibilities. Do you have a multimeter to test with?