@jllaing69 said:
OK, When I click on a freshly loaded copy of Round Corner, I get this message: Trial Period Expired: FredoCorner
As Box wrote, Round Corner and FredoCorner are two different extensions and require two different licenses. Since you are getting the message about FredoCroner you must be clicking on a "freshly loaded" copy of FredoCorner, not Round Corner.
I don't know why but a lot of people have difficulty differentiating between the two even though the names are clearly different.