You might've mentioned this already; if so, sorry to ask...

What is the CPAP's pressure range set to? It seems to be too low. More modern machines are connected wirelessly "somewhere," so new settings can be sent remotely.

Don't bother with a new mask unless the current one is cutting into you or leaking too much. Even then, it might need only a size adjustment.

And snoring is better than not breathing, but it does indicate the therapy needs improvement.

Also, is your ferritin still high?