Potential fix for "medias" key

😳 Auth Attempts 😳

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Merge pull request UltimaHoarder#783 from E0911CD45B19686/patch-3

Update `prepare_reformat` to pass `preview` data. Fixes UltimaHoarder#782

Fixed: Stories - Preview Not Found

Seperate paid content and paid (free) preview content

Any paid post that has image previews will be marked as "Free".

Update README.md

Update README.md

Fixed auth and metadata issues

Fixed auth for the 100000th time :)

Fixed auth

Update main_helper.py