Hello @Stanislas_Verjus,
Merci pour ta proposition, mais c’est bon, ça fonctionne. 
Merci @alexk pour ton aide pour trouver la solution.
SOLUTION: If anyone encounters the same issue, I had to delete the other A type entry which was created by default by OVH. And for the TEXT type, I had to put "_glideauthid in the SUBDOMAIN selection
Thanks a lot to all of you for the support !