Hate that you had to chase them down. Been there.

Losing them to apps kinda does ruin my week, yeah.

How much vinegar are you actually putting in the mix when you test it? I've heard about the fizz test for years but never got a straight answer on the ratio, like a spoonful per cup of soil or what. Also worth noting that vinegar only tells you if it's alkaline, it stays quiet on the acid side, so baking soda on the same sample is how you catch mix that's already too sour. What did the master gardener say about the range seedlings actually want, because a lot of bagged stuff runs low and people blame damping off when it's really the pH locking out what the roots need.