What are /r/TriviaCrack's favorite Products & Services?

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Whenever I have an app or something else where buttons aren't working it's almost always another app overlay that is interfering, in my case Twilight, the screen dimmer. I occasionally have to pause Twilight to allow specific buttons to work in other apps/browsers/etc. It's rare, but when it happens, that's always been the culprit for me.

Any chance you have another app that may have some sort of overlay interference with certain Trivia Crack buttons?