Ultimatum relic vanished after picking it up

After defeating chimera I picked up the loot while not knowing my inventory was full and picking up the item. Checked my inventory. Inventory was full. And the relic wasn’t there. (Screen recorded)
I went back to see if it automatically went to my stash, wasn’t there. Went to the trials of chaos stash didn’t find it there. Continued the story hoping one would drop from enemies. Nothing did.

I got 2 Sekhemas relics one that said u won’t gain and one said u will gain 2 ascendancy points. Got really excited completed the one that ‘will’ make me gain 2 points. And it didn’t. Nothinh was there in the end to interact with to gain my 2 pts. Checked my passive tab. 0 ascendancy pts :(

Now I’m in act 1 cruel. Saw online that I can go back to normal act 3 so went back defeated chimera and nothing dropped. I don’t want to continue with my only 2 ascendancy points (that I did pre chimera but drop).

Been pouring hrs into the game (pc and ps) would appreciate a solution please, thanks.