TCBL Map Not Allowing Any BG In
What is TCBL and BG?
1st person worldwide to reach 35,000 achievement points.
https://forum-en.gw2archive.eu/forum/support/bugs/TC-Borderland-bugged-for-BG-players
You’ll probably get better results just bumping that thread. Although, I’m sure Anet is tracking the issue because the last thread about this got deleted.