I have 3 X missed an arcade tourney when the
(a). Notice of the tourney starting follows immediately after the initial invitation, then
(b). A further immediate notice saying I have missed out eg ".. no longer availab to join.."., all within 10 secs tops !!

any help out there??.. like do people pre-enroll somewhere else why it fills so quickly??

if its micro then you have to be Quick on the buzzer as its 1st come 1st served.

Yes, this is only on the 25past the hour tournaments.

All others will have a 10 minute gap to allow you to enter, but with a Micro only holding 8 players the sooner it's full then it will automatically start closing all registration!

So be prepared straight away for when it appears as you won't get much time to enter.