Error 504 when trying to install fitbit app

[EvelineBarents]

Trying to install the fitbit app on my Sony Xperia C4 Duale butt it keeps saying Error -504.

Tried every option i found online... 

- Empty all cache and data from Play Store and Google play services .

- Removing Google account ons my Phone.

- Setting play Store back to fabric settings 

- Downloading on WiFi network and via.4G network...

-Shutting down the Phone. 

Still nog succes!  Driving me nuts!  This way i am unable to set up my Fitbit watch.. 

[USAF-Larry]

@EvelineBarents, the Android 504 error is a data download error, not a Fitbit app error. Check out this Android help article to see if it helps:  App couldn’t be downloaded due to an error 504

[EvelineBarents]

Thank you for your reply. 

Unfortunately none of the described options worked. I even tried setting my phone back to fabric settings and it still gives the same error,  only with the fitbit app, all other apps where installed again without any problems.

Found out that the Charge 2 watch I bought isn't compatible with my Sony Xperia C4 phone and neither with the tablet I've got, so probably have to return the watch to the store now anyway... Maybe that's causing the problems with the installation,  although the app did install properly on the tablet (but can't sync with the watch...).