As another point of reference, I decontaminated, clay, polished, then coated with Graphene Ceramic Spray Coating Advanced on my 2022 Honda Accord on Dec 9th. Haven't been able to wash it much do to the weather I washed at the end of December and just last night. I only wash it at home. Front end, hood roof top of trunk bead up great. Anything below the door handles on the sides won't even sheet water, it just clings. I truly believe the coating is still there but clogged.
I have purchased your strip wash and Ceramic wash, wondering what is best to try next. Also I live in Central NY snow belt, the coat the roads with really nasty stuff here. The reason I switched to ceramic coatings from sealants is I was having the same issue. So I am thinking that I may need a more harsh wash to keep coating clear.