Well it looks like your air pump is working, that’s good. The roots look okay for the size of the plant and they don’t look to be suffering from any contagions. They are underdeveloped in the sense of where they should be in your auto receipt though.
Dampening off seems to still be your issue. I recommend adding a fan to help dry out the peat pod. I have had the peat pod in the grobo now for a few weeks and have noticed some signs to look for to see if your pod is too wet. If the entire top of the peat pod is uniform in color and damp, you need to take measure to dry out. A healthy peat pod will show signs of drying out in some areas and those areas are lighter color.
I bought 2 inexpensive usb fans on Amazon that work great. I use hook magnets to hang the fan. The extra air circulation keeps the moisture level just right for the peat pod.