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I am trying to use it right now but on the time input, I get a numbers keyboard which means I can't use ":" so I can't type a time in..

I am using an LG G4

You should have it on your number keyboard. Sometimes you have to quickly tap one button multiple times to get ":". It reads "-/:" on Android 5.0.1.

The only buttons I see are 1,2,3,4,5,6,7,8,9,backspace,0 and "Next"