Something I noticed when making my modpack, is that the ranged weaponry from Alex's Caves are unaffected by any of the ranged attributes (with the exception of draw speed). It would be nice if there were compatibility for it, as I am unaware if there is any way to register the ranged weaponry from that mod to be affected by Apothic Attributes ranged attributes.

The arrow damage and arrow velocity attributes don't work on generic projectiles, but they should work on arrows that fire the relevant forge events. If they're not arrows, there's no way to increase the compatibility (except by using the Projectile Damage attribute in 1.21+). If they are arrows, Alex's Caves needs to be firing the appropriate events.