Just Purchased but plugin doesn’t work

About an hour ago, I purchased this plugin on codecanyon.net. I tried to add my purchase code here on your site, but it was not accepted. I have installed/activated it and connected it to my Google Console api key for Youtube. However, when I attempt to log into the app from my site, it allows me to go through the entire process and ro click "allow" when logging into youtube, but then it doesn't do anything on the site. Its like I never logged in. I can't get past the screen. If I attempt to post something to Youtube, nothing happens. I have attached a screenshot of the Google login and allow screen. After I click allow, I am present with the authorize button screen again. I have attached that screenshot as well.