Do you still have some money in the wallet, or is it a brand new empty one?
If it's a new one you need to choose 2FA option when you create the wallet. If you need to access funds from the old wallet you will need the old seed and use it to restore the wallet.
https://electrum.readthedocs.io/en/latest/2fa.htmlJust there is any need for the 2fa for the electrum wallet when you have the seed. I mean the saving the seed to a same place is enough security and therefore i never use 2fa with Electrum. It just creates extra trouble as in the OP case. Just want to know if i am doing it right without 2fa ?