Added multiple facebook pages and instagram pages, plugin not working

Hi,
I followed the instructions to install this plugin and I followed everything correctly except I added multiple facebook pages and instagram pages during the setup.
I then continued to watch the installation video and I realized I was only suppose to select one page.
Now the plugin is not working and it is giving an error.

I tried to purchase a professional installer on Envato to setup the plugin correctly, but they said they were unable to fix it and stated I would have to contact support to fix this.

When I press to get the access token for instagram, I get an error message
“URL Blocked: This redirect failed because the redirect URI is not whitelisted in the app’s Client OAuth Settings. Make sure Client and Web OAuth Login are on and add all your app domains as Valid OAuth Redirect URIs.”

I have attached a screenshot of the message and I also have included all of my login rights for your review

I need to know how do I clear the plugin information and start over to set the plugin up correctly?