Thank you. Am I better off simply deleting the Electrum account?
As long as you have your seed phrase written on paper, and can restore the wallet again, you're coins are still safe. Now that you're entered the seed in Electrum the damage is done. It doesn't sound like your coins have moved, which is a good sign that you downloaded the official wallet and not some malware.
Any recommendations?
What I would do is restore your hardware wallet with a new seed phrase, and then transfer the funds to the newly created wallet from Electrum.
Is Ledger still a leader in cold wallets or are there better alternatives incl muli-sig.
There are better alternatives to Ledger; if you only have Bitcoin look into the
Foundation Passport or the
Coinkite ColdCard. Both are more secure and are open for peer review, unlike Ledger. If you own any alt -coins that you want to store on your hardware wallet, one of the
Trezor Safe models is what I would recommend.
If you have a second computer, you can use it air-gapped (offline) as the second signer for a multi-sig, or just use it air-gapped as a "cold wallet." To use a second computer as a cold-wallet, you would install Electrum on both machines, restore the seed on the off-line machine and have a watch-only wallet on the online machine.
I was initially interested in Electrum for its multi sig setup so there was less reliability on the seed phrase only.
As long as you have your seed written on paper with backup copies safely stored in two or three locations, there's nothing more secure than that.
I liked Unchained & registered however you need to be a resident of the US, which I am not. Thanks again
I'm a US resident, and I've never heard of Unchained. After taking a brief look at their website, I doubt I would use them. I'm not letting any "Financial Advisors" anywhere near my bitcoin. Learn how to be safe and self-sufficient with your storage.
I've provided ways for my children to gain access to my bitcoin in case my next motorcycle ride becomes my last. It helps that I trust my children (adults) to not rob me before then, and there are ways you can ensure not any one of them can rob you without colluding with the rest.