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Error: Cannot add access token directly to the shortcode.
Due to recent Instagram platform changes, it's no longer possible to create a feed by adding the access token to the shortcode. Remove the access token from the shortcode and connect an account on the plugin Settings page instead.

Error: Access Token for frueskov_widefish_children is not valid or has expired. Feed will not update.

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.