I managed to install it and make it work perfectly on FF55.0b6 (64 bit)
I really like it and it does what i wanted and needed. It's really useful.
The problem with the installation disappeared when i did upgrade to 55 version. The log in issue was cause the add on need to open a new window to make the process to work.. I am used to have ff blocket to single window, but that way it was opening a new tab and wasn't working
The saving problem was cause of the cookies...needed to add an exeption to allow the add on to work cause i usually block all the cookies.
Guess all the struggles are cause of the change to webextensions.
I'm having same problem as i read from another user. When i try to install new version i get message that the file is corrupted..
Tried to delete all the "extension files" in profile folder..just messed up everything but stil same.
Tried to install it in safe mode, same.
Tried to copy the xpi file in the extension folder of the profile and it gets deleted..
But i'm running ff 54.0b13,,so i don't complain about..just wanted to report
Tried to install it on same machine and same profile with FF 53 stable..and it works..so i doubt it's antivirus or it would be blocked on both cases...
In my case it's something about FF 54..if i put the install.rdf file in the xpi before install it...it seems to install...but it stops working..
By the way...even if i manage to install it on ff 53 stable, can't granted the app access to google drive.
Managed to install and log in...but looks like settings don't work at all.. I wanna move it on sidebar but i can't even though on settings i chose to.
Installed new version from website, everything seems to work, just not saving abstract note colors, like on old version