Once the top nut is removed the plate should come off and then the entire spring can be taken out. Did you compress the spring with the tool? If not do a little bit. then tap the top plate out slowly. Make sure the tool is seated well.
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2012 Panamera 4
2010 Boxster
2000 Boxster S 3.2L
1990 Land Rover Defender 6x6
Really? with the nut removed that whole triangular plate should come right off? yes i have the spring compressed, and i did try tapping it but it looks like is on there solid.
I will spray a little WD-40 in the there and try tapping again.
Got it off. with the spring depressor tool on and tight I picked up the whole assembly and gave two good whacks with a hammer one the end of the strut where the nut was removed from, and that sucker popped right out.