Bugged vendors

Hello ervryone,
I have a problem with arena team organizer vendor and arena battlemaster, from yesterday I just can't open both of them? Can I fix this somehow? I don't have any problems with any other vendor in the game...
Thanks!
P.S. Also can't open my 2v2/3v3 team to check.

Guys any ideas please? Still can't open both vendors or even leave my team...
The problem is on all my character's, only these two vendors and arena teams when I press H...