Add-ons associated with wrong project

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Definite Concrete5 noob here. I loaded Concrete5 in a "dev" folder - added a theme - sort of, I guess...couldn't get things to work so I released the license, deleted the folder, reinstalled Concrete5 to folder "dev" again, associated the theme, then all was well - until I tried to add on an add-on. I see it associated with my project at C5 but when I attempt to add it to my site I'm asked to log in to the community again, which creates another project just like my original - but with no licenses associated. I suspect I have some errant activity left over from the original install which is confusing the heck out of things, but I'm hesitant to blow it all away and start again (though frankly I have little to lose at this time as I'm still working on the right combination of tools before I go crazy with site building)

I'm looking for suggestions to proceed...surgical extraction of errant items, or thermonuclear destruction and post apocalyptic rebuild.

I would appreciate any help or suggestions.

Thank you.