When learning Hindi letters I cannot complete my current lesson.

I get to the "Tap The Pairs" screen and the last "pair" remaining is either an error (doesn't match) or Duolingo will not accept the entry.

This has been going on for several days now.

I have screenshots saved on my phone and I would be happy to share if anyone at Duolingo reads this and would like more details please contact me.

Is anyone else experiencing this problem?