If you click on the diagnostic, it should take you to an entry point to "fix" the error. Can you post the error? Did you make entries for the dates paid on the 2019 ES payments? Is one of them after 4/15/2020? 

You may have to contact support. https://proconnect.intuit.com/community/taxation/help/how-to-contact-proconnect-tax-online-for-help/...