There is indeed an issue on our end which we can't reproduce yet.
It stopped working for some and we are investigating it.
We will make an announcement and release an update once we know the issue.
I'll lock this topic now.
For further questions / issues, follow and reply to the FAQ Topic please: https://www.ugx-mods.com/forum/general-discussion/21/ugx-map-manager-faq/526/
Thanks for your understanding.