Anyone had trouble uploading the additional document/s before?

After clicking upload (3 times), I'm getting the 'success' message appear in the top right, but it is not actually showing as uploaded and thus not letting me click Submit.

The file is compressed 1MB PDF and contains ~50 pages.

Edit; having an absolute nightmare uploading these. Received email 4 hours ago. Chrome is not showing the notification at all. And using Edge is giving the above.

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this is purposefully not my screenshot in order to follow the group rules. This is taken from the user manual

Does anyone have any tips for submitting large file-sizes on the eVisa application form? All of my supporting documents are PDFs so I can merge them into a single file but it greatly exceeds the 3MB file limit.

The culprit pages are image-heavy PDF versions of webpages showing my biographies and a few writing samples. I've also included live links to all of these pages on my cover letter/contents page - if there's no way around the file limit, would these links suffice on their own?

Thanks! (And thank you to everyone who's posted so far, this page has been a fantastic resource)