I will use this thread to report bugs. I may edit or reply when I encounter more.
Bug 1): I am able to wear three rings, 2x +3 Strength and 1x +4 Protection. Both strength rings are listed with h) prefix.
Edit: I am now wearing 7 rings. I do have 10 fingers, but only 2 ring slots :)
PS: I see you made the game in Godot. That is awesome! It deserves more attention; I prefer it over Unity.