I just purchased a Sense2 for advanced sleep tracking based on its good figures in Quantified Scientist tests, but there is unable to activate Premium trial, or it cancel itself in some days.
Based on special purposes I have 4 Google accounts (let's call them GM#1-4) on my android mobile, and it can manage it properly. I use a different Vendor's smart watch for all my daily and sport purposes, but there the sleep tracking has not so well built analitycs behind of it, so I decided to try a Sense 2 only for sleep tracking. So I bought one and I made a new gmail address (let's call it GM#5) and I used it only for Sense 2 setup. In activation of Premium trial it did not allowed to use the same (GM#5) mail address in payment field, it auto-filled with GM#2 mail address and has no option to change it back to GM#5, while all sign-in data were correct (GM#5) in app (etc). So I step foward with GM#2, and after I could activating free Premium trial, what I could see it also in the phone Fitbit app's headline. While it did not gave me the premium features (detailed sleep analitycs, etc), even it had the subscription. 🙂
So I canceled that GM#5 account from Premium, reset Sense 2, deleted all Fitbit app of the phone & started from the beginning with GM#2 account. I could manage Premium trial setup, it showed in Google Play, but not in the app's headline, even the sign-in data was the same (GM#5)... Therefore I canceled it from Google Play and next days set it up again on the same way.
For this time all things were fine, I could use detailed sleep tracking analitycs, etc. FOR 2 DAYS, after that Fitbit account both in phone app and in Google Play subscription section showed I must step in the app on my phone to approve my account, otherways Premium sub will be canceled. I tried it for several times, reboot the phone, step in again into the app, did on the notebook, as well, but nothing happen (all check-in details were set fine). So finaly on the next day that free Premium trial was canceled by Fitbit/Google Play, so I could use it for even 2 days. :)))
Fort third time, today I used mine main gmail address (GM#1), and made the same as earlier (reset Sense2, etc, etc). I was step into ask for Premium trial, but in the next step in payment section I could not see that this is a Trial and the first payment will be only 6 months later... Strange, but anyhow, I tried to order it with my paypal (it is ordered also to my GM#1, as well), but Fitbit reject it with an error message and asked for I choose a different payment option... For last movement I tried to cancel and setup again my paypal payment method, but finaly I had the same issue, so after a surluss spent several hours I still do not have Premium trial...
Actualy, I do not have time for these things, it should work also for any damm people without a rocket science. I planned to purchase a Pixel Watch 2 in my next visit to the USA in april (until I wanted to test this system), as Sense2's and PW2's all sensors are the same and use Fitbit app, but as PW2 also use this stupid Fitbit-Google system mix to Premium account, I am shocked enough to avoid that. So I sell my Sense 2 and won't purchase a PW2, that is sure...
In several cases Google seems like a beginner developer on the market, I really can not imagine how can they make it possible for such a big company like them... I do not like the unflexible iOS, that is why I do not have an iPhone, but I can easily understand iPhone users, as they do not have to spend tons of time on different forums to solve that million issues what Google brings to Android users - pretty amateur... While apple can make really good watches with high accurate sensors and analitycs behind of it, in Google eco I have to run after everything, and PW2 is still far away in accuracy even from apple watch SE2002, so I started to fed it up...
