ordinary For anyone who has the same issue with OLS not updating: I posted a support ticket and Adam sorted this out.
In the end he got me to run "docker pull litespeedtech/openlitespeed" on the affected server.
Then, on the CP server: "appcd-cli 1.1.1.1 change-webserver open-lite-speed" (where 1.1.1.1 is the IP of the server on which you want to update OLS).
Usual disclaimer, always make backups etc. This also cleared config for OLS. I needed to disable and re-enable CPGuard WAF and reset my OLS webaccess pass with: "docker exec -it openlitespeed /usr/local/lsws/admin/misc/admpass.sh" on that server.