You don't need to go through the whole process and start over. As I mentioned over on your Autogeek thread, your prep is fine. It's all the stuff on that is on the surface that is masking the performance of the coating such as the shampoo, quick detailer and the possibility of road grime. I did not even think about the pollen season as someone mentioned in your Autogeek thread as well. Gold Class is a nice shampoo but it can mask the properties of any LSP. I have experienced this myself and that is why I no longer use it.
The effects of the QD and the car wash will be removed after a few washes with a shampoo that leaves nothing behind. Road grime is a little harder to remove and there are shampoos that can do this. Road grime is an outcome of rain and all the crud from the road being flung on the painted surface.
You could try paint prep after a wash to see if that helps. The other option is the possibility of trying power clean to clean up the surface during your wash process and see if that restores the hydrophobic properties. Worst case you have to start over.
The difference between opti-seal and hyper seal is that hyper seal contains SiO2.