Contact App Developers - HTC One® (M8) for Windows®
Depending upon the app, the process for contacting the developer may vary.
From the Start screen, swipe left to display the apps list.
Alternatively, tap All apps (lower-right, may require scrolling).
Tap the app.
Swipe left or right to locate then tap support or about.
If 'support' or 'about' are unavailable, navigate: More > About [app name] > Contact [developer name] then skip to step 5.
If the above options are unavailable, feedback can be provided using Marketplace Ratings and Reviews.
Tap 'feedback and support' or 'feedback'.
If applicable, tap an email account in which to compose a message.
Enter the message.
Tap send (at the bottom).
Marketplace Ratings and Reviews
From the apps list, touch and hold the app.
For a specific game, tap Games then touch and hold the game from the Games collection.
Tap rate and review.
To rate the app/game, tap the desired star rating.
To review the app/game, tap the Write a review field and enter the info then tap submit (lower-right).