I've used the wallet with out problem the whole time I've had it. The problem started last week when my iMac drive went sons and i did a fresh install . I backed up my drive beforehand and im currently in the process of restoring it.
Im hoping i can restore the original app with the associated files and launch the app, and open the wallet with password. Wishful thinking huh?
You told us from the beginning that you just updated the computer. What exactly you did? You installed a fresh Mac OS or you did update the OS?
I only ever downloaded the electrum app from the bonafide site and the app has updated once since with no problem. Downloaded file to computer and launched automatically , if that makes sense.
What do you mean about bonafide site? Do you mean that you download the Electrum wallet from bonafide site?
If you did then you might be installed a fake Electrum wallet.
Te seed was a 12 word seed and im waiting for the deep scan to complete before i search for the recoverable files.
If you are sure that the backup 12 word seed is correct well, maybe the electrum is not compatible with the latest update of your OS.
Other Mac users experience different issues every time they update their Mac PC. So, it might be a compatibility issue.
Can you try to install an Electrum wallet on Windows OS or Linux based OS to test and import the 12-word seed and maybe it will work? If not maybe I am right that you've been installed a fake Electrum wallet.