The following diagnostic is generating:
Form 4868 Reject: Form 4868 can only be filed on or before the original due date to which the extension applies, unless Line 8 checkbox or Line 9 checkbox is checked. If Line 8 checkbox or Line 9 checkbox is checked, then Form 4868 can only be filed on or before the extended due date for taxpayers out of the country.
Solution:
This only applies to extensions.
Go to Screen 9>e-File Extension>Remove the 1 from e-file extension Form 4868 or Form 2350.