Font weights not working

I’ve been trying to use a font in Lunacy, I can select the font but can’t change the weight. I can see the weight but the box is greyed out. The weights are definitely installed on my PC and I can access the various weights in other programmes just not lunacy.
I’ve also tried getting an older version of the program to see if that will fix it but no luck. I also saw an older forum post for someone having the same issue but it doesn’t seem like the issue was solved for them.

Wondering if anyone has any advice or fixes for this issue?

Please, tell us the name of the font with this issue, so we could reproduce it on our end.
Thank you!