Hi slowChemical,
Thank you for your post and welcome to the community!
In general, if you already submitted the documents but you have been required to provide additional information, you should be able to see in the Resolution Centre the option 'Add files'.
We can also provide you with an external link that you can use to upload the documents again. to solve the issue, please call our Customer Service or contact us via Facebook or Twitter @AskPayPal!
Hope this helps!
Martina
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