Post failed

When a post fails, open it from the calendar to see the network’s message. Fix the problem, then reschedule or use Post Now. Your workspace can also retry failed posts automatically.

Errors on any network

Message mentions…	What to do
re-authenticate, reconnect, token, session	Reconnect the channel.
too long	Shorten the text for that network, or split it into a thread.
image too large, unsupported format, aspect ratio	Resize or crop the image with the photo editor, or save it as JPG or PNG.
rate limit, posting too fast, try again later	The network is limiting you. Wait a while and try again.
permissions	Reconnect and allow all permissions. Check you’re still an admin of the page.

Instagram

• Instagram blocked your request: Instagram’s own safety systems refused the post. This is often temporary after a lot of activity, or because of the content or links in the caption. Wait a few hours, change the caption slightly (especially links and hashtags), and try again. If it keeps happening, post once from the Instagram app to confirm the account is in good standing.
• Instagram detected that your post is spam: change the content and try again.
• You have reached the maximum of 25 posts per day: Instagram allows 25 API posts per account per day. Schedule the rest for tomorrow.
• Aspect ratio not supported, must be between 4:5 to 1.91:1: crop the image to a supported shape.
• Your Instagram account is not a business account: switch it to Business or Creator in Instagram, then reconnect.
• Instagram requires you to log in at instagram.com…: log in on instagram.com, follow the steps there, then reconnect.
• Facebook rejected the post due to missing permissions: make sure your Facebook account has full control of the Page linked to the Instagram account, then reconnect.

X

• Credits or payment problems: X charges for API access. When the X API access behind your workspace runs out of credits, every post to X fails. Contact your PostNimbo admin or support. Reconnecting won’t help.
• You are not allowed to create a post with duplicate content: X refuses identical posts. Change the text.
• There must be a maximum of 4 items per post: X allows up to 4 images per post.
• Your X account is temporarily locked: log in to x.com, unlock it, then try again.
• Publishing articles on X requires an X Premium subscription.

Facebook

• Photos should be smaller than 4 MB and saved as JPG, PNG: compress or re-save the image.
• Cannot post Facebook.com links: remove links to facebook.com from the text.
• Content violates Facebook Community Standards or flagged as abusive: change the content.
• Page publishing authorization required: reconnect and allow all permissions.

TikTok

• App not approved for public posting: posting access with TikTok isn’t fully approved for your workspace yet. Contact support.
• TikTok detected potential spam: change the caption.
• Video duration, format or frame rate is invalid: check TikTok’s video requirements and export the video again.

Still stuck?

1. Copy the exact error message from the post.

2. Open the post’s menu and select Copy Debug JSON.

3. Send both to PostNimbo support.