Hello, first of all I want to apologize because of my poor English, is not my main language and I will try to explain myself as better as I can. Secondly, I've tried to found this before looking at this forum and other pages and social networks but it seems something unclear and nobody asking specifically about it.
My question is, as the subject says, how to create a watch-only wallet from a multisig wallet I've created in electrum, BUT, to see in the smartphone (like Sentinel or Bluewallet does with regular accounts).
I know
how to create a watch-only wallet in electrum but the idea is to get the full address generated from your public key handly and quickly than needing to open the computer, access electrum, etc.
I've found very useful Sentinel and Bluewallet watch-only because with your xpub/zpub you can generate all your fresh addresses so quickly, generate qr codes anywhere, etc., and I think it would be so useful to do it the same way with my new improved multisig setup. But I can't find a clear way to do it.
What I get both from Sentinel and Bluewallet when I try to enter the public keys that I get from electrum is that the master public key from each of the co-signers (starting by Zpub, uppercase, not lowercase as regular wallet ones) isn't a valid zpub address. I don't know how to get this info from electrum or maybe it's impossible, but I don't know because I haven't found this specific question anywhere previously.
Thanks in advance for your help on that and again my apologies if this has been answered and I didn't made a properly research!