People keep talking about a CRAP? That has to do with Sleep Apnea?

What’s this for, what’s it mean… I can’t find it anywhere online, or the real name or anything? HELP!

I have sleep apnea and use a CPAP – worked at 1st, now I feel like crap again…what to do?

I have been using the CPAP since July – at first it was great – I had energy again, then little by little I started to feel tired during the day again and low energy level…any ideas?