Hi, my rfd900p has different freq range
one has min 868 - 869 and max 86900 - 87000
and the other rfd min 90200 - 927000 and max 903000-928000
I don’t know it’s can be different, i bought them in a bundle.
Have you tried reflashing a the latest firmware file to both devices to confirm they have identical and up to date firmware?
another user here reported that his radio(s) were showing the wrong frequency settings and he is apparently getting replacements.