recording using Unitron hearing aid

I have Unitron hearing aids which connect to my Windows 10 laptop for voice and listening. All I want is to record my voice talking clearly and play it back to me. I am only trying to improve my pronunciation.
When playing back a recording I make, it sounds sort of like crackling, something like over-driven speakers.
I have tried different settings - high and low quality, etc but cannot remove the crackling.
There is no record volume control on the hearing aids.
Any help would be appreciated.

If they connect via bluetooth, then you may be out of luck. Audacity often has problems with bluetooth devices.