Cant report players after grup Guardian/Abyss

Hi,

Why cant we report trolls that go in grup just to troll the party after the dungeons, it says they are from another realm/not found, but if you can make instances server crossplay - make the report button work for ppl from other servers. I had like 2very toxic players in rare gear and T2 accesories on Oreha raid, that kept blaming us and calling names, still can’t report because - not my server.