what sort of error are you getting? screensnip of the console is useful
1. script isn't found. it could be spelled wrong, your lua path could be wrong. check the files are in the right spot in the lua folder. check lua settings in /mqsettings lua plugin section
2. script is starting but ui not appearing. you may have had some error which broke the ui, try /mqoverlay resume
3. script is failing to start with some error?
4. lua plugin is loaded?