It could be that your account settings are restricting the sharing feature. Check your privacy and sharing settings to make sure everything is configured correctly. Also, make sure your post doesn't violate any platform rules.
Sometimes, it might be due to a poor internet connection. Ensure you have a stable network connection. If the problem persists, it could be a bug with the platform and you might want to contact their support for assistance.
It could be that your account settings are preventing the sharing or the post doesn't meet the platform's sharing criteria. Check both of these aspects.
There could be several reasons. It might be that your account has some restrictions, or the app needs an update. Sometimes, the format of the content you're sharing isn't supported either.
There could be several reasons. Maybe the privacy settings of your post don't allow it. Check if it's set to private or only visible to certain groups. Another possibility is a technical glitch. Try logging out and back in to see if that fixes it.