Error: Profile with the provided email does not exist or the email is not verified

Hi,

I'm having issues trying to import content from Confluence into Space. After some processing the importer prints out the error message: "Error: Profile with the provided email does not exist or the email is not verified" and quits. After the import, the folder/document structure is as it should be, but every document contains only two words:"Intermediate content."

I'm using an admin account to access Confluence, so there should be no probs with that account's permissions.
I'm using an access token generated by the Space admin account, so there should be no probs with that account, either.

This is a fresh install of Space and there are no other users there than the admin account.