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My first suspicion would be access to the destination page. Backdrop checks access when building the menu, so a link can be enabled but still be hidden...
Posted3 hours 24 min ago by Antony Milenkov (amilenkov) on:
This is a security precaution. It's not recommended and it's not documented in the settings.php file, but you can set allow_insecure_uploads to be TRUE if you wish to allow uploading files like...
Comments
Might be worth a brief discussion if you have time:
https://github.com/backdrop/backdrop-issues/issues/6199