One of the things that I've noticed so far in BG, especially in the Gladiator Circuit Celestial+ tiers (that also
@BeroMan pointed out) is that there are certain accounts trying to manipulate matchmakings in order to get easy points or win.
In order to do that, they start the search for a new match in both of their accounts and accept it only when they simultaneously get the "New match found" screen to accept or refuse the match, so they keep refusing new matches till they are sure it's amongs themselves.
What I'd suggest Kabam to do is to implement a max of 1 or 2 "Refuse" maybe each day to avoid that because I've been searching for a match for like 12 minutes now and got 6 times in a row "Match refused" which means that someone was clearly intentionally trying and match his alt (or modded) account.