I didn't know where to post so I posted here. I need help quick.
So I just download Vivaldi like 2 days ago and I want to sign in, I have a Vivaldi account and everything. There is a video I posted. VIDEO
I don't think that's supposed to work.
Your setting screen doesn't look like the Vivaldi settings too.
You can't login because this is vivaldi and not chrome. The Option is still there though because vivaldi is based on the chromium project.
By the way a synchronisiert function for vivaldi is unter construction at the moment - and will hopefully come this year