Amazon doesn't recognize MOBI file

Have compiled 117,000 word novel using Scrivener’s "Compile for Kindle eBook (.mobi)
Kindlegen previews it perfectly

When trying to upload to publish on KDP I get error message saying wrong file format.
They want the following file types:

Word (DOC or DOCX)
HTML (ZIP, HTM, or HTML)
ePub (EPUB)
Plain Text (TXT)
Rich Text Format (RTF)
Adobe PDF (PDF)

What is going on? Is Scrivener compile function out of date??

Update

I re-compiled in ePUB format. That was also considered an invalid file!!

It looks like I am answering my own questions here!
After querying with Amazon it appears I should use ePUB Validator. On using Validator I find we have internal error on both ePUB and MOBI compiles by Scrivener because it provides outdated versions.
Does Scrivener have a comment for that?

The MOBI file is dependant on KindleGen, not Scrivener. Using the latest KG version?

amazon.com/gp/feature.html?docId=1000234621