RS700S Firmware V1.0.9.16 not working with NOKIA XS-010X-Q ONT

RS700S Firmware V1.0.9.16 still does not work with my NOKIA XS-010X-Q ONT

The last version of the firmware that works with the NOKIA ONT is V1.0.7.82

With firmware version V1.0.7.82 I get 500 mbs download and 500 mbs upload speeds.

With any firmware version after that I get 250 mbs download and 1 mbs upload speeds.

My fiber plan is 500 mbs download and upload from my service provider.

I am with Cox in the Phoenix  AZ area.

My daughter has a different ONT for her service in the Chandler AZ area and has issues also but not as drastic as my issues.