I am unable to exchange cortex fragments for favor at the Custodian merchant on Xbox. With 127 fragments in my personal inventory, I press X to exchange fragments, and then a window pops up confirming that I will receive one favor and 27 fragments, but pressing A does not consume my fragments nor give me favor. GT is YOLO MCSWAGBAGS.

Mechanics question: I am aware of 2 Meme Virus buffs stacking in a party, but currently if two members activate the buff, a third member without the consumable will not receive any bonus XP. Do meme viruses actively exclude those without, or are meme viruses intended to affect the entire party?