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Hey, sorry for the late reply, I was off for a while during the lunar new year =)
You can go to the settings ( icon on the top right corner), and Import/Export then export accounts, you will get a .kc file
Then in your other computer, dl the extension, use the same password (it will be used for decrypting the account keys) and choose Import keys, select the .kc file.
Hope this (still) helps!

When I open the Keychain icon, I don't see any Import/Export menu item. There is a menu button, and when I open that I see Add Account, Manage Accounts, Change Password, Preferences, Autolock, and Keychainify. There's a mention of your support proposal below those choices.

I appreciate your personal kind attention, and have been awaiting some response, as I am baffled, and unable to proceed without it.

Thanks!

You should be able to scroll down, and it's just under autolock.

I was able to use the pgdn button, as there is no scroll bar to grab, and there it was, just as you said. I hope I have no further difficulties, and appreciate your help.

Thanks!

You're welcome!
Weird that the scrollbar didn't show though, which browser are you using?

I tried to add the extension several times, but I get an error every time. It say the download is interrupted. Is there another source for the app? IIRC, I had to jump through some hoops when I first managed to get in on Brave, although I don't remember specifics.

I have been considering trying Ungoogled Chromium anyway, so if you aren't able to provide another source for the app, I may try that on the other box.

I use the extension on Brave on multiple devices and OS without issue.
Since like the issue is with your browser itself, maybe check if it's up to date?