Thanks, yes I realised TailsOS welcome screen has the option to disable networks.

So testing restoring the TailsOS Electrum hot wallet (as networks were on at some stage) and the restore shows nothing?
I would assume transactions would be shown with the online hot wallet? I also don't see transactions in the online standard watching only wallet?

Finally sending from the offline wallet still prompts error: There are no funds. I am BTC is on the BTC network and the offline wallet is only to use the private key to sign the standard watching only wallet's transaction, however I am still trying to sort out restoring the wallets first.