Same happen to me in the past and it was related to apple id as I was using 2 different id so when I changed to the original id for the game then it fixed. hope this can be help :)
Seems like we have to continue play offline mode and wait for update, i don't want to delete and reset to level 1. I did that before and lost all the coins about almost 2M, I had fully upgraded weapon Dragons Bane, all gone hehe what a waste that was, imagine lost 69 level char and start from 1. now playing with poor…
Same thing happen to me last month game was not starting on my Iphone then I though I can delete and download again but it reset the level 69 to 1 and I lost almost 2m coins and fully upgraded weapon the one we get from kill black dragon. so now I am playing again with poor weapon with level 53 now another problem game…