New driver needs help

Is it visibly cracked? If it is, you can use tape judiciously as a temporary fix.

These masks have lots of seams and can be touchy. Sometimes you just have to take them apart and reassemble.

Hopefully you got your elbow problem worked out.

I do wake with a dry mouth quite often.

Your apnea is still poorly treated, but you may find you can avoid mouth breathing as you dial your therapy in and then can use a nasal or nasal cradle mask. They are much more comfortable and easy to seal.