Hi Ray
Odd behavior indeed. Should work with a single tap. (Not swipe or press).
If your app seems to be misbehaving, be sure to make a back-up of your songs and playlists.
Then, force-quit iRp, power down your device, re-start, open iRp and try again.
If still no joy, contact support@irealpro.com and supply your full device info and app info.
Good luck!
)BOB