Without the XMR Public address field configured, XMR will not work. There are 2 places where the XMR Public Address can be entered, in the Settings option on your CMS, under the Displays tab and also in each Display Profile under the Display settings. Without XMR configured, your Displays will receive updates based on your Collection Interval in the Display Profile.
Below is a link to the Post CMS Installation Guide, which also includes a section on how to configure XMR:
https://community.xibo.org.uk/t/xibo-cms-post-installation-setup-guide/522?source_topic_id=9392
Can you confirm if this is a Docker or custom setup?
Many Thanks.