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I'll be glad to help.
If you are having this much symptoms, 3 things need to be checked:
1) the fit of the mask, is it pressing too hard? is it too large or too small?
2) the settings
3) need for other enhancements such as humdifier
If you are not getting help with your current provider, I suggest you seek a second opinion. If you're not comfortable with it, obviously you will not be using it and that will not do you any good.
Wish you best of luck.
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