Device is not being recognized as certified...how to fix this

That CDMCM-210 string is the problem–A fully updated DSJr would identify itself as a “PS Audio DSJr DAC”, which Roon would recognize properly.

So, something has gone wrong with your firmware update on the DAC–if I recall correctly, this points towards a problem with the portion of the update that took place over USB, but PS Audio is in a better position to make the final determination.