Nope, same here. Have only found 2 or 3 and the reward leaderboard shows no score, so I have no idea how many I found.
So far, off to a bad start for the tower challenge. Had to run an errand 10 minutes before it began and couldn’t start it until a few minutes ago. Brought back my token collector which was fine. Then for some stupid reason I brought everyone home, thinking it was a regular event and had to find the characters that collect EC.
On a positive note, I’m over 1/10 of the way from being able to buy my first Cup of tea with my 22 MLificent Coins.