I've changed my default browser to Opera GX recently and well It appears that Opera can't import my old data from Firefox. I'm the most interested in passwords, since I exported bookmarks to .html file, but what about my login info?
I tried to import everything by settings page, but It just says it's done and then nothing particular happens, is it a bug or something?

-Also I tried to import settings on other device and it works the same, well to be correct it doesn't work at all

@yurifabricio Could you tell us what actually happens when you try to detach a video? I don't want to be rude, no one will reply since they cannot possibly help you, especially when you haven't told us what's going on. I have no idea how to help you, but if you could precise then there's a bigger chance that maybe a Moderator or a person who knows more about it will respond.
Anyway, good luck with solving the problem!

There's an option which allows you to export bookmarks (only) from firefox with a .html file. It should be where are bookmarks are shown (in fire fox).

@yurifabricio Could you tell us what actually happens when you try to detach a video? I don't want to be rude, no one will reply since they cannot possibly help you, especially when you haven't told us what's going on. I have no idea how to help you, but if you could precise then there's a bigger chance that maybe a Moderator or a person who knows more about it will respond.
Anyway, good luck with solving the problem!

I've changed my default browser to Opera GX recently and well It appears that Opera can't import my old data from Firefox. I'm the most interested in passwords, since I exported bookmarks to .html file, but what about my login info?
I tried to import everything by settings page, but It just says it's done and then nothing particular happens, is it a bug or something?

-Also I tried to import settings on other device and it works the same, well to be correct it doesn't work at all