I think blood pressure was on the beta interface home page under At a glance but I accidentally deleted it and cannot restore it as there is no list of possible additions. That is, the list is only what I have already. How do I restore it?
I assume you've already checked this - How Do I Edit My Home Settings?
If that doesn't work and you're on the Garmin Connect Beta program, here's how to report issues and leave feedback.
I Am Part of the Program. How Do I Leave Feedback?
Open the Garmin Connect app.