Strange readings on the Devilbiss

Hi, i have the Devilbiss CPAP and have been humming along nicely until the last two days, when, even though going to bed wearing my mask at 2230 and waking up with it on at 0530 (ie a solid 7 hours with no interruptions), my Smartcode reports that i only had the machine functioning for less than two hours per night and with quote a high AHI reading as well, (normally i am 4-5 and the last two day readings are 9.5), this has only been the last two nights, i recently bought a new Flexi hose but would be amazed if that was the culprit and was wondering if anyone else experienced this and resolved it?

If you try to check results of the last night's sleep after noon you won't get your hours... the machine resets to a new day as of noon. In other words if you want results of last night's sleep, check your #'s before noon once you're awake.