Helo, hope you can help. I am a player of z day for 2 yrs and for 2 weeks have had a farm. Both in..

Helo, hope you can help. I am a player of z day for 2 yrs and for 2 weeks have had a farm. Both in the same alliance. I switched to my farm to build and collect and my battery ran out on my android tablet. When charged again I tried to access the game,with no joy. Wont log back in. I think it's because... The main game has an id number with name on start up, when I switch to farm,it does no have number, only name at start up. Is there a way to log back into the main game without that id number.. Hope you can help?