Only had this an hour and already downloaded App, logged into App and synced to phone and taken blood pressure.
So TL:DR: Don’t try to create account, just download App and try logging with your email and create your own password. Worked for me.
What I didn’t do: try to create a new account. Instead per advice on other review I downloaded the GoHeart App by the same developer, created account there, filled in my details (had to convert from metric to imperial for height and weight), added random abstract photo for profile then clicked save and synced with watch.
Then, I downloaded the WearHeart App, opened and logged in using the GoHeart credentials. Straight in and magically my profile photo and info from GoHeart populated.
Next, I paired WearHealth to watch. No problems.
Next went into device management and changed preference to imperial. I’d already done that in GoHeart but it didn’t work, so check it again.
Works perfectly. I’m not sure if you even need the GoHeart App, it may be possible to login to WearHealth without registering first on the other one, but this was the way I did it.
No idea about other aspects, but totally love the look of this watch and the intuitive way to click through functions. It’s the first fitness watch I’ve owned, but for the few $ I’m so happy it’s working great.