Swapping players club to starting 11 keeps on freezing restart the game.

So i noticed it Wednesday onwards ive brought players and I want to put them in my starting 11 i go to do so once I’ve swapped in one player the game freezes? Does not let me do anything else having to restart the game constantly it’s like I can only play with the current 11 selected? 

can you email me with a response please 

kind regards