i found following differences
1/
on Q2x and Q4x the DCC features are not listed on features.cgi page
( they are on a M32x )
How to use featurestrial ?
Would a valid DCC key accepted ?

2/
on M32x the edit watch adresse list is not available
( it is on a Q2x and a Q4x )
would it become available when uploading a valid DCC key ?