Just to confirm, what is the exact error prompt when you link QuickBooks payments to my QuickBooks desktop account? This would be very helpful in checking the root cause of this error since there's no ongoing investigation about it yet.
I am getting an error page while trying to link quickbooks payments to my quickbooks desktop account
I can't see any attachments in your reply. Would you mind typing the error message instead or inserting the screenshot in the body of your reply? You can do that by clicking on the Photos icon when replying to this post.
I have some articles to guide you in troubleshooting some errors when using QuickBooks Payments, which can also be applied during setup. You may want to check them out.