@qenquni I'm sorry to hear that you are experiencing this. Could you please provide a video to show that you are unable to equip the runes. Is it also all runes or some particular ones?
I cant really supply a video as its on playstation 4.. it simply wont allow me to put in any runestones at all, for the berserker armor (chest), Bear Claw (bearded axe) and ursine guard (shield) it keeps saying no runes available while i have a lot of both weapon and armor runes in my inventory... they have been purchased by buying the berserker pack (1500 helix) so mytical quality on 6/6/2021 according to my owned section. in other weapons, shields and chest pieces that i looted by playing i am able to add runes... just not in these 3 items that costed me extra money to get.
The berserker hood, helm, bracers and breeches can hold runes and i maxed those out at 3 each... it clearly seems like some sort of technical issue... maybe a missing code line that add runes in those pieces