Yes, I have the same problem.
There appears to be no disk number metadata. So on adding this album to library this 21 CD box-set becomes a single album of 312 tracks. But I seem to remember there is a limit to the number of tracks roon will display (150?). A it happens there are two of the CDs unavailable on Qobuz. CD5 (tracks 39-52) and CD 16 (tracks 153-168).
I wonder if the limit on the tracks roon will display is affecting this? It is disappointing as many of the available tracks roon is not displaying is core French piano repertoire like Satie and Debussy for which Queffélec has a reputation. Maybe @support could take a closer look at this?