Clash of clans app concern

Hi,

I would like to ask about the clash of clans app as I am unable to login for 3 days now using my iphone 5s. I had my friend try logging in using their apple id on my iphone and they are also unable to get in to the clash of clans application, I get a "try again later(1)" error, I have been trying for three days now and still get the error. I tried using my ipad air to get in to the clash of clans application using my apple id and was able to get in. My question now is how can we resolve this. I already attempted uninstalling and reinstalling the application but still get the error. Also, I can get in to other applications like boom beach using my iphone 5s but not clash of clans. Assistance needed.

Thank you,