Why is the Linux snap version of Electrum stopping at 2.6.4 (while at the time of writing the current version is 3.3.
? For the user, the snap package version is much simpler and faster to be installed and easily updatable on Linux systems compared to the AppImage or Python sources versions present on the official site.
I don't think that wallet will work but there is no link to download the wallet for on snapcraft the official website.
also, think that the wallet in the store was published by someone and not from the developers of the wallet, in general, you can read more here --->
Electrum wallet It’s totally outdated, broken, insecure version.
Ignore any wallet that is not linked to
https://electrum.org/#download.