Sweet Treat Showdown glitch

I completed the Sweet Treat Showdown and currently about to complete the Bonus Sweet Treat Showdown aka the Bonus Puppy Love. I have 2 Sweet Treat Boxes left, however, everytime I go to buy the last two, I receive the Fluffy Love Balloons. I received 15 of them so far.. and it keeps telling me I have 2 boxes left. Seems like there's a glitch preventing me from winning the Bonus prize.

Seems like a common issue considering the other posts.