Awww.... i thought Arena is opened on level 20 XDYeh! i hope they can fix it abit sooner because its been a week maybe this issue started ... and im still at Lvl 14 (they should let me play Arena first even if its 1 game before this Error comes out >.<" huhuhu.. )I afraid that it's because of the connection of our own >< sometimes we didn't realize those .. I used to complain at facebook page but then again I think it's my phone or sometimes my wifi-route problem .. so yeah like you said we try many way to fix issue of our own thou..I Think and Of course they will try a way to fix the issue in their own , because some people cant wait just to wait for miracle happens and their lives ... i think your luck is in your side i dunno~~~ and they're really taking a lots of time to fix this issue ...
and the team said they are looking at this issue on priority ><
i guess we just have to wait and while we wait, we can try to figure how it can be fix ........ by itself ........ and luck ...
LOL //sorry
but yes yes,, hopefully they fix it soon ><