Not certain if this the the right place to ask, but I have what I think is a reasonable request:

I’ve been using the Bladesinger Mod, and I noticed that the Bladesong state does not work while wearing Elven Chain (from Rivington).

Elven Chain is Medium Armor, and Bladesong only works with Light.

I get it, but Bladesong could function like the spellcasting ability, where it works if you have proficiency with the armor you are wearing. That might be overpowered for multiclassing and getting the AC buff while also wearing Heavy armor, so another option would be to change Elven Chain to be light armor like similar Studded Leather +2.

Not the end of the world, but it would seem sensible for a bladesinger to use that armor without penalty