Here’s the deal, it’s a handful of days. The BOTTOM LINE… doubling or tripling your caloric load for one day a week is not
Error: Access Token is not valid or has expired. Feed will not update.
This error message is only visible to WordPress admins
There's an issue with the Instagram Access Token that you are using. Please obtain a new Access Token on the plugin's Settings page.
If you continue to have an issue with your Access Token then please see this FAQ for more information.