Sorry, I don’t have an answer for you on this. Just wanted to mention that I also am trying out BW because the LastPast update was so destructive of my stored data. Plus I never received a notification that the update was coming, what changes were in it, and most importantly, things the enduser should do to re-shape his stored data so it would not be impacted negatively by the update.
LP – really a disappointment after being a great aid for so many years.
Currently there’s no way to automatically log in in Bitwarden. The closest you can get is going to settings, options then Enable Auto-fill On Page Load. It can be buggy at times and will not work if you have multiple accounts for the same site.