We are integrating PayPal Oauth into our web application to support payouts to our customers. When testing in Sandbox everything looked fine. In Production, we are receiving an error when trying to connect a customer's PayPal account to the Application through OAuth. The flow is we call the Oauth SDK and pass the necessary parameters. The user gets a pop up window for logging into PayPal, or if they are already logged in they get a continue button. Upon connection, an error pops up on the PayPal side that says "Something went wrong on our end".
UPDATE - We were able to replicate this problem for some browsers, but it's very inconsistent. Example, it may work on Chrome for some customers. For others, it will work on Firefox, but not on Chrome. We've checked our network logs and do not see any errors. Checking PayPal console for errors in console/network and APIs - there is no error either. If I pull the redirect URI (with oAuth code embedded) from their API call and hit it directly, it works.
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