I have this problem atm.
I updated Electrum to 3.0.5 from 3.0.3. I've tried using my 8 word seed to restore and no balance or history is showing.
The 2 ways I have tried are:
1. New wallet from old seed. It can create but no balance or history shows.
2. 2FA method but get stuck at enter seed (the "Next" button is grayed out after entering seed). I am using a 8 word seed. Some other people that have commented on YouTube also have my problem.
I have been looking for solution for 2 weeks now.
Can't you go back to 3.0.3 and then send coins to another wallet?