Oops... Unknown Error

Hi, I am using a Samsung Galaxy S6 running android. I have Madden Mobile linked to my Google Play. The app runs properly while not connected to Wifi, but as soon as I connect to wifi I get an error that reads "Oops... Unknown error. Sorry, something unexpected went wrong. Please try again. This happens consistently while 'Signing Contracts'. I have already tried reinstalling the game and switching to wifi while in the game, but nothing has worked. Thank you.