I am the super admin for our company, and I am trying to add a new employee to our private Cliq channels.

This user has an active Zoho Mail account, but they do not appear in the "Add Participants" list.

I've also been able to add new users in Cliq by "@" mentioning them, and then the option to add them would appear. This is no longer happening.

This user definitely exists:

Any tips? Additionally, when adding new users to Cliq, only a subset of our organisation's members are appearing in the list of available users.