Help.. The online server cannot be accessed right now.

Help… i was in the middle of the biweekly mission and I accidentally exited ( swipe up) neomonsters . When I opened it again and went to online, it says " the online server cannot be accessed right now. Please try again later." thanks in advance.

What did you do then, it happens to me often too, I just try it again and again until I get back to the online events.

I tried it again and again…and it worked. But after a few minutes It revert back to " online server cannot be accessed" and the hero rank bar which is almost half btw became zero.

Ohhhh… It worked again