It doesn't matter whether you upload the certificate or enter the credentials to the supported repository. It keeps displaying "Permission Denied". Please see screenshot below, no errors in NGINX.
journalctl -f
throws tons tons of uwsgi errors with error 500 and error 400:
Jan 06 17:24:48 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license? from 203.0.113.119 -> 400 '{"message":"Permission denied"}\n'
Jan 06 17:25:26 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license/creds? from 203.0.113.119 -> 500 '{"message":"Could not save credentials: Permission denied"}\n'
Jan 06 17:25:27 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license/creds? from 203.0.113.119 -> 500 '{"message":"Could not save credentials: Permission denied"}\n'
Jan 06 17:25:27 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license/creds? from 203.0.113.119 -> 500 '{"message":"Could not save credentials: Permission denied"}\n'
Jan 06 17:25:27 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license/creds? from 203.0.113.119 -> 500 '{"message":"Could not save credentials: Permission denied"}\n'
Jan 06 17:25:27 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license/creds? from 203.0.113.119 -> 500 '{"message":"Could not save credentials: Permission denied"}\n'
Jan 06 17:25:58 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license? from 203.0.113.119 -> 400 '{"message":"Permission denied"}\n'
Jan 06 17:25:59 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license/creds? from 203.0.113.119 -> 500 '{"message":"Could not save credentials: Permission denied"}\n'
Jan 06 17:26:14 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license/creds? from 203.0.113.119 -> 500 '{"message":"Could not save credentials: Permission denied"}\n'
Jan 06 17:28:36 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license? from 203.0.113.119 -> 400 '{"message":"Permission denied"}\n'
Jan 06 17:28:51 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license? from 203.0.113.119 -> 400 '{"message":"Permission denied"}\n'
Jan 06 17:30:07 grm uwsgi[978]: [WARNING] (grommunio Admin API) PUT /api/v1/system/license? from 203.0.113.119 -> 400 '{"message":"Permission denied"}\n'