Something’s not working error

Something’s not working. It looks like the API call to GoToWebinar isn’t succeeding. This may be because you are on a trial account. Unfortunately API calls can’t be made to GoToWebinar accounts on a trial. If you do have a full GoToWebinar licence please try re-authenticating the plugin again by pressing the ‘Click here to get Auth and Key’ button in the plugin settings. You should also clear the cache or turn the cache off in the plugin settings and this should resolve the issue.

400 invalid_request – Required parameter(s) missing or wrong.

I have tried both ways to connect and both result in the error. We have a paid gotowebinar account and not a trial, setup the api and received the consumer key and site key. No matter what it still continues to do this. Have also cleared the cache without any luck and tried different browsers.

PHP Version: 7.2.13
Wordpress Version: 5.2.1
Plugin Version: 13.8
Current Theme: My Listing Child
Application Used: Our Official Application
Active Plugins:
Admin Menu Editor Pro
Wordpress Auto Spinner – Post Rewriter
BuddyPress
Contact Form 7
Custom Facebook Feed
Elementor
EmailOctopus
Envato Elements
Envato Market
Facebook for WooCommerce
Elementor – Header, Footer & Blocks
Jetpack by WordPress.com
MailOptin – Lite
Newsomatic Automatic Post Generator
Premium Blocks for Gutenberg
Regenerate Thumbnails
Safe SVG
Easy Updates Manager
WooCommerce Stripe Gateway
WooCommerce Services
WooCommerce Subscriptions
WooCommerce
WordPress Importer
WP GoToWebinar
SEOPress PRO
SEOPress
WP EventsPlus

400 invalid_request – Required parameter(s) missing or wrong.

The page I need help with: [log in to see the link]