Missing entries in Personal settings

Hi,
I’m encountering a problem with one of our Nextcloud instances ; some options are missing in the personal settings sections. The most problematic is that the Desktop And Mobile entry is not there (it’s used by our iOS and macOS users to download the configuration file for their devices allowing us not to set up their devices one by one). I updated the instance to the last version of Nextcloud 22 with no effects.
There is virtually no difference in configuration and apps installed between my two instances (except I’ve upgraded the “working” one to Nextcloud 23, and I’ve set up the Collabora App and App Order).
I checked the config file to see if there was an obvious option, but I can’t find anything relevant.
Any idea why this might be ?
Thanks,

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