Somehow I managed to mess this up AGAIN. I did the same thing as before, except this time, I saved on the Coin Flip app. To get what I wanted, I needed to switch to the Happiness Checker app but not use it, and flip the coin on the Coin Flip app twice. Since I was already on the Coin Flip app, I flipped the 2 coins first, then switched to the Happiness Checker app and left it there while I went to Solaceon and deposited my Pokémon in the Daycare. I then switched off of the Happiness Checker app to the Daycare app. From what I read in the first post, it sounds like doing the Happiness Checker taps first is not required, but is just recommended to avoid accidentally passing through it again, which I did not do. Was this a mistake? I was aiming for frame 15 and I believe I got frame 12. I did in fact have 6 Pokémon in my party when I switched to the Happiness Checker app.
From step 7:
"It is important to remember to switch away from the Happiness Checker before proceeding to the next step!"