Thanks !!
I am not able to link my itch.io purchase to Game Maker Marketplace. And it's asking me to purchase again.
Can you please add the extension on itch.io download page? That would be really helpful!
Regards
Added Geon_FX_-_Particle_Editor.gmez. Please check, download and import following the instruction here: http://www.steampanic.com/geonfx/faq#import_gmez