Today's practice run was smooth, except I purposely woke up DS11 from his slumber so he could practice. Both had the app open. I gave the count down, and planned to hit FOM after about a second. He went right on, so he got to practice with no red JBG, had him go to My Status and then blue JBG. He got the Something went wrong popup and I got to show him to x out and go through the steps. I personally had no issues, couple of popups on tries 5, 7, 12, whatever. Had him practice hard close and reopen. Seems ready to go. So, we are set for Thursday. Except DS15, who doesn't really care about SW, just groans in bed. He'll end up being the one screaming "what do I do?" and end up getting a BG for just him and screwing up the rest of our attempt with a popup we never saw (about him being in one but not the rest of us), and then we'll freeze, unprepared for what that looks like and scrambling to fix it. THAT would be the only thing that I can easily foresee that would bring unexpected BG results. Otherwise, practice is a good way to work through muscle memory and app sightlines.