Can only be used to publish to business IG User accounts; Creator IG User accounts are not supported.
Accounts are limited to 25 API-published posts within a 24 hour period.
JPEG is the only image format supported. Extended JPEG formats such as MPO and JPS are not supported.
Multi-image posts are not supported.
Publishing to IGTV is not supported
Stories are not supported.
Reels are not supported
Shopping tags are not supported.
Branded content tags are not supported. (paid partnership)
Filters are not supported.
To tag another IG page, you must type '@' and then the name of the page you want to tag. This is different than tagging a Facebook, LinkedIn or Twitter page where you click on the Tag Account drop down.
You should not add a URL to the Text/Caption area of an IG post