This button has been added to the 1.1 version of the application. When you click on it, the application checks which courses you have already bought but have not been downloaded yet and activates the ‘Download course’ status for them. This option is useful in case there are problems with downloading a course that has already been paid for. If nothing changes in the view of a selected course upon clicking on this button, this means that the course has not been bought by the user.