Oooof, I probably should've checked back sooner. XD
All right, I'll investigate that issue as well! In the meantime, the "menu disabled" issue has been resolved!
Download the new "SRD_HUDMakerUltra.js" here (right-click, save-as): https://raw.githubusercontent.com/SumRndmDde/HUDMakerUltra/main/SRD_HUDMakerUltr...
I'll update the one on the itch.io download once I resolve the other bug! ^^