We are using
Moodle 3.8.2 (Build: 20200309) Version 2019111802
We have set up some LTI links using the publish as LTI tools method and provided the links to a client. They have set up the activities in their LMS and most users are able to access the content and everything is working for them.
The main administrator however is unable to use the LTI link and is always presented with the logon page for our LMS. We have checked and they haven't exhausted their seat allocation. They are using the same version of Moodle as us.
has anyone got any ideas how to solve this?