An OAuth2 Exception on Venmo usually means Venmo is having trouble authenticating your login request. This is typically an app, browser, device, verification, or account-access error rather than a credit card charge. If you see OAuth2 Exception, OAuth2 Exception Venmo, or OAuth2 Exception login not allowed, the issue is usually related to signing in or… Continue reading OAuth2 Exception on Venmo: What It Means and How to Fix the Login Error