I'm facing the same problem.

Same here.  I haven't been able to attack for almost 24 

Same here.  Cannot start any battle.

Guys, we are sorry for the inconvenience! Mech Arena was down for maintenance and now everything should work properly. Please try starting the battle again!

Still not working.

Having the same issue contacted the IT support and got no where 

This issue started last Friday and they still have not fixed it 

I appreciate your confirmation! Our Devs keep working on the issue, we expect it to be fixed ASAP. Thank you for your patience! 

Still not working 

Over  24  hours now  and  still  cannot connect.  No  response from  support  WTF!!  Horrible customer service 

Seriously...........these guys should get their business together......OMG...the game is down...

What did we pay for ????

Dear all! Many of you were experiencing troubles starting the battle in Mech Arena for some time after the soft release of 2.07 update. Our team has already handled the issue and now everything works as usual. Today at 12:00 UTC all players who tried accessing the game during the time the servers were down will receive a pack of in-game resources as compensation. In addition to that, 10 Gold Tournament Tickets will be credited to the players’ accounts. Sorry for the inconvenience!

I am getting a empty screen after a battle is completed. I am facing this recently. I can't proceed further once this screen appeared. The only thing i can do is to close the game and relaunch it but again i am facing the same issue when ever a battle is completed. 

i

I'm  not  receiving  any  points  in  tournament it  keep  taking  my  tickets  but  shows  I  didnt  even  partici  in  the  tournamet  yet.

This issue has already been solved. Sorry for the inconvenience!