My 6-year old is dying to swim and I've got green water even with high FC levels

I have looked through the manual and watched the videos on the SWCG, but can't find a solution. Searching online, it seems this is often a result of the AC to DC Converter failing. I think this is probably going to be my last season with this pool anyway, so it will be BBB only for the next several months.
I used the acid treatment to remove metals from my pool per the sticky. It is crystal clear once again! The Culater packet doesn't seem to be turning colors so I am not sure if it is catching anything or not. The water cleared up almost immediately after adding the Sequestrant. The filter cartridge continues to filter nicely and it is a milky greyish-brown when I rinse it out now. I am in the process of rebalancing. Hopefully, everything will go smooth from here on out. Thanks for all your help.

As I recall the CuLater is pretty slow acting.