MT4 demo not able to make a trade (common problem)?

[64825651]

brand new to forex. opened a demo account via mt4 app on iphone. was able to make trades yesterday no problem. Today I was not able to place trades. kept saying common error? I did not try to put a stop loss or take profit price so i know its not a math error. internet working fine. Anybody able to help me out with this?

[William Roeder]

Something wrong between your app and the server — app to network, network to server, or server. Internet working is irrevalent — some paths may be.

Try restarting your phone. After that ask your broker.