I asked Coinmama to transfer to Legacy address format and it started with 33TQ, why ? - it was not cash address format, like it should have been right ?
So the address that you attempted to send the BCH to, starts with a "3"? 
If that is correct, then I am assuming that on the title bar of your Electrum screen, next to the wallet name... it says "[2fa]"... like this:
If that is correct, then unfortunately, you have no real option but to follow the somewhat complicated procedure as shown by nc50lc above... "Electron Cash" does not support Electrum "2fa" wallets as TrustedCoin does not support BCH transactions.
The solution is to restore a "disabled" version of your 2fa wallet as outlined above in the first part... this will give you 2 master private keys (the xprv's) and 1 master public key (the xpub)... from that you can reconstruct the wallet as a "normal" multisig wallet in Electron Cash (as outlined above in part 2).