It seems like your Web page and app for Android have a lot of issues.
1. MyFitnessPal does not update with FitBit Charge HR even after I linked the accounts. The brush off that I got was to go to my Dashboard, click on the Settings, Applications, then unlink the accounts. However, even your Web page does not seem to work well on a touch screen phone because when I select Settings nothing appears. I will try my computer, but I wonder why these things cannot be changed with the app, why the Web page does not display properly on a mobile device or interact properly.
2. If there is a known problem with linking the accounts why is this not being fixed? Obviously you are aware of the problems with linking accounts across platforms. Please fix this.