Remote app keeps forgeting Apple TV

Good afternoon! Apple's Remote app 4.2.1 on my iPhone 6 running iOS 8.1.3 keeps forgetting my AppleTV 2 running Apple TV Software 7.0.3. When I open the app, AppleTV isn't an option (other iTunes libraries on my network do appear though). I can get my Apple TV to re-appear temporarily by using the remote that came with the AppleTV to navigate to Settings > Computers > Turn Off Home Sharing and then turning home sharing back on Shortly thereafter, however, the Remote app can no longer see the Apple TV.

Any suggestions for how I can get Remote to permanently remember the Apple TV? Thanks!