I went to Electrum wallet, then Wallet -> Seed but the "seed" link is greyed out? Let me elaborate, last week, I tried to log into my my Electrum wallet and it asked for my 2FA, but when I created the wallet it was not a 2FA. So I created a new wallet (within Electrum) and successfully made it 2FA and is showed the correct BTC amount. So, maybe a 2FA wallet does not contain the seed, by construction? I saved the seed on paper, I know it's correct because I am very careful.
If your wallet is a 2FA one, you can only see the seed while creating the wallet. So there is no way to recheck it again.
But anyways, the issue here is that Electron Cash don't have support for the TrustedCoin 2FA (the one from Electrum), so you can't just use the seed to restore the wallet in Electron Cash. That's what you will need to do:
https://www.reddit.com/r/btc/comments/6wf50x/recovering_your_bitcoin_cash_from_a_trustedcoin/