Hello Firear19,
Sorry for the trouble with updating your BoldGrid Connect key. There is no quick way to update it, but there is a way to do it using the database options in the cPanel. If you are able to simply un-install BoldGrid and then re-install it, then you can also use the premium key that way. Check out this article for the steps to update your key. In the future, there will be a built-in way to update the key, but at this time, please follow these directions in order to apply the premium key in place of the previous demo key that you have used.
If you have any further questions, please let us know.
Kindest regards,
Arnel C.