Just curious...after you tested the soil PH by using vinegar what did you do with the soil that was in the test cup?
If you are able, can you post photos of the plants so we can see them? Thanks.
What kind of plants are you growing?
Indoors or outside?
If outside; what climate zone?
If inside; temperature of house and type of available lights?
Many plants droop and wilt when they are transplanted; it takes them several days to get accustomed to their new surroundings.
We cannot keep digging them up to look at their roots or they will go into shock. Better to wait and see if the plant adjusts.