Yes, Nano S. Now I followed your instructions, it all worked nicely and I was able to sign with two keys and spend an UTXO, so thanks everyone for your help.

Thank you both, I'll try your suggestions. Anyway I would not mind losing the tiny amount spent in this experiment, I assumed many things could go wrong. I was following a tutorial and it seems they neglected to emphasize your point.

Hi, I'm playing with a 2 of 3 multisig, trying to get familiar with the technology. What I did was:

1) Initialize 3 different ledgers, as legacy. Copy the master public key seen with Wallet->Information for each of them, with the form xpub...
2) Create a 2 of 3 multisig wallet with Electrum. When asked, I entered the 3 public master keys for each cosigner. It looks fine, a watch-only wallet. In wallet->Information I can see the Master Public Keys entered, in keystore1, keystore2, keystore3. Nothing suspicious.
3) I sent a tiny amount of BTC to the first of the addresses shown in the multisig wallet. Received with no fuss.

So far so good, here is where my problems start. I just wanted to spend that UTXO. I go to send, choose an address to pay to, a transaction is generated. I choose to Pay it, set the target fee, finalize it. Now I want to export it to be signed by the wallets assigned to each ledger. There are several export options: Copy to keyboard, to QR code, etc. I think at this point I tried them all, for instance I can 'copy to clipboard'. Then, in another instance of Electrum open the wallet for the first ledger cosigner, then Tools->Load Transaction->From text, and copy there the content of the clipboard. The transaction is shown perfectly fine, amounts, outputs and all, but the 'Sign' button is grey. And on the top left there is a text saying 'Transaction Unrelated to your Wallet'.

Why is it unrelated, if the public master key is one of the 3 in the 2-of-3 multisig? Why can't I sign? I must be doing something wrong...

Any help, please?

Thanks!

I see your point, still I would not feel too comfortable with my crypto on a computer online. In fact when I started using Wasabi I realized I miss the coin-control feature you describe, I need to take a look at it.

I've been using Wasabi's Coinjoin for a while in an attempt to tumble by BTC. It is not much, I am getting the grips of it. The feature looks nice, but I have a few doubts on the best way to do it. For instance, after some hours when I reach home and there are several UTXOs "ready" (with a high anonymity set), is it a bad idea to move them in same time to my real wallet? I have to move them because I am using Wasabi only for the coinjoin, won't leave the crypto there. Of course I mean moving each one to a different address, but very close in time. Would this help trace the coins to me?

Another doubt: say I have 1 BTC to coinjoin. If I send it in one piece and order a coinjoin, I'll get two parts, one gets anonymity, it is 0.1 or 0.2 or 0.4 BTC, the other is the rest, not anonymized. Then I have to order coinjoin for the change as well, it is kind of slow. I thought I could send directly to Wasabi 10 different 0.1 BTC transactions, and coinjoin them separately, is there any problem with this? And if I do, and soon all of them are ready, is it a bad practice to move them to my real wallet in a short range of time?

Thanks!