What is wrong with my plant?

Like foxylove said this is a nutirent lockout. This happens when you are overfeeding or giving to much water. When it happens it will no longer drink, your soil must be heavy as well now is it? It's because the water stays in the pots. As in result your plants don't get the nutrients they need. You have to flush them with like 5.8-6PH with only water in it. It will take some days before they start drinking. Indead more sure the soil completly dries out, but i would recommand to feed them with only enzymen afterwards. Enzymen really love to heal your soil and use old nutrients for benefit. If you don't have them, just water them but don't take to long since you still have the defencies.

Under feeding if your grow diary is right. At this stage with those nutes, 5ml/L or 19ish ml/gallon. You are showing a lot loss than that on your diary

This will be take some time. Maybe you lose 2 weeks but nothing else you can do. Looks to me like a nutrients lockout. I think you gave her too much cal mag. Flush your plant and dont forget to let the soil completly dry out before watering again. Give her only PH water for a while before reintroducing your plants to nutrients. Good luck 🍀