Thanks for the reply!
I already use many crypto wallets; Electrum multi-sig being one of them, Guard is just another one I use and sadly having a problem with it currently.
Once you login to the Guarda App, and go to settings of your BTC Multisig wallet, and click on PRIVATE KEY, you are given a Mnemonic AND a PrivateKey which looks like a lite coin address almost. I'll create a fake one so you can see an example of the key I can see:
L98km2ZaKaoXieoKK9]Hj8850jDjnEZykOwwhx092j8iL9zz
Unfortunately there's no manual exports of a transaction like you can on Electrum, hence I cannot manually export it and give it to my co-signer for him to load and sign off.
That is a valid private key if the backup private key from Guarda starts at L which is a compressed WIF private key.
But I think even if you imported this to Electrum you can't find funds have you tried it?
Maybe the Mnemonic seed you can use to recover the multisig wallet into Electrum but it requires a co-signer key or seed to recover your wallet from Guarda. I don't know if this will work but you can try if the Guarda gives you the Mnemonic seed phrase after export.