Contact Support EITHER https://proconnect.intuit.com/community/proconnect-tax-news-updates/discussion/proconnect-tax-assist... OR https://proconnect.intuit.com/support/en-us/help-article/intuit-account-settings/contact-proconnect-...

They should have the answer. Please post it back here when you find out. My guess is you should not be doing any date input before you get the e-signature, as you do not know when they will sign when you send it to them. I do not use this feature.