Not sure if it worked. I ran the downloader and then got the install and relaunch dialog. I clicked it, and it disappeared and the open application disappeared. So not sure if it updated. I opened the app and checked for update. It said I had the latest 7.2.3b1. Is that right?
1Password Version: 7.2.3b1
Extension Version: 7.2.3b0 shows in Safari extensions
OS Version: 10.14.1
Sync Type: Not Provided