Crash for abyssal

Hello,

As a part of EU, i can understand that the problem of server is a know issue.
I understand it’s a pain for the server to form party with palyer of different region and create the instance for this group when there is somuch attempt to connect.
But how is it possible for a full party, already form before the launch of any content to not succeed to go into an abyssal/guardian/dungeon/chaos when we have sometimes the capacity to tag alone and succeed to do the content
Even tag alone in a Chaos fail most of the time …