GutenbergKit fails API request authentication for self-hosted sites

[dcalhoun]

When editing self-hosted site content with the experimental GutenbergKit editor, API requests fail authentication, which results in missing block settings and other broken features. This is also the likely cause of wordpress-mobile/GutenbergKit#75.

This may occur for both self-hosted sites and self-hosted, Jetpack-connected sites. It seems we are not providing the proper API root URL and/or authentication token.

Example options missing within the experimental mobile editor:

Steps to Reproduce

1. Edit a post on a self-hosted site.
2. Inset a Paragraph block.
3. Open the block inspector/settings.
4. Note the missing color and sizing options.

[dangermattic]

Thanks for reporting! 👍

[dcalhoun]

Closing in favor of wordpress-mobile/GutenbergKit#75, as it appears this also occurs on iOS as well.