We have a problem connecting with real db:
we get an oauth error "the resource is not allowed",
even though:
token refreshing works,
global users are OK (enabled and set up).
"Web Rest API" is checked in the optional features,
User access group has rest api action access enabled
user can connect with Standard ID
in the "Active users" list connected user is shown as '"user_id" Web"
everything works with my demo db, but doesn't with the client's db.

Any ideas?