We have received a number of reports for the following issues with Rival Stars Horse Racing on mobile:

Visual issues in the game affecting the training menu and game text.
Visual issues causing the screen to repeatedly flash.
These issues seem to be affecting any devices equipped with a PowerVR GE8320 GPU.

At this time we are issuing an important photosensitivity warning for Rival Stars Horse Racing on mobile:

A very small percentage of people may experience a seizure when exposed to certain visual images, including flashing lights or patterns that may appear in the game.

We are currently investigating the issues and hope to have them resolved soon.

Thank you