Hey all,
Recently we employed a reverse proxy into our network to allow public access to our portal. When attempting to access a hosted feature layer from a computer on the network using the reverse proxy link, I'm getting this:

When I'm accessing the same item, using the same link, on the portal server, I'm able to see the item and access without issue, no Invalid redirect_uri.
So far, I've updated the App Info with all URL's that will be applicable including the reverse proxy url, what should I attempt now?
Thank you in advance!