I suppose I only have myself to blame... I usually wait to a .1 release of MacOS before upgrading. I didn't do that this time, and trying to get 1Password installed on either Safari or Chrome is pretty much a complete hot mess.
When I choose "Install Browser Extensions" from the 1Password App menu, it redirects me to a web page that offers to let me download the main 1Password app. This is terribly terribly confusing, and I can't blame Apple for this one. Like so many other posters on here, I had a ton of problems finding the 1Password Safari extension. The only way I could get it in the end was dig down into obscure links in the support forum. At least I got it.
Now, on Chrome, because I signed into Chrome my extensions were automatically installed, but for whatever reason the Chrome extension can't connect to 1Password app. I tried uninstalling and reinstalling, no dice. At this point, I'm pretty much at a loss. At least as far as Chrome goes.
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided