I made a match and only one of the tiles disappeared so at the end of the game I had one tile remaining so I lost. :c

I've had this issue happen if I play "too fast" clicking ahead of the former tile pair completely disappearing.

I'm having different issues with the same game.

I finished a couple of games without issues, but couldn't complete the Volcano or Peka maps. Emptied the board, but couldn't send score.

On top of that, some tiles refused to clear even though there was nothing to stop them pairing off. For example, I had six tiles left on one board. Three of those tiles were in a row at the top. The tiles on either end matched, and should have cleared when clicked on. They wouldn't move. I had to shuffle the board and clear other pairs before they would pair off.