So many assumptions
TryNinja thanks so much for your insight, very helpful indeed. The world needs more people like you
Yes - to those who suggested it, I DID manage to somehow setup multiple wallets with different mnemonic codes. One of which had an extended seed with custom words, the other didn’t. I don’t know how or why I did that on setup (possibly because I hardly knew WTF I was doing) but I now realise my mistakes.
I must have deleted trustedcoin listing from my Authenticator (I guess I must have thought it was dodgy as there was no reference to Electrum and I don’t recall their name ever being used. The exchange I was using got hacked so I was a nervous I guess). Anyway, I contacted TrustedCoin and because I used the same email address that I signed up with, they sent me a new QR code and also confirmed that I had multiple wallets setup. I notice now the listing in my Authenticator shows as ‘trustcoin/electrum’. Which would have been nice initially, and should hopefully help any others avoid this same problem.
I then tried to complete a transaction and it failed (got a server error). Went back to TrustedCoin with the error, who could see that I was using an older version of Electrum. They suggested I update Electrum and so I did and BOOM, all worked perfectly fine!
So i managed to get it sorted, YAY. Thanks for everyone’s help.
NotATether - “In general, services should not be giving people QR codes as a recovery option”
I hope you never need something recovered in future, and if you do, that you can do it by verifying yourself. I’d hate to think that someone’s bitcoin could be lost and unrecoverable because a service they’re using refuses to help them if they get stuck.