Offering downloaded file link broken for custom GPT

Hello, I have a custom GPT that I use to rename PDF files under a specific schema and then offer them back for download with the new name.

This has worked fine without issue since the beginning.

However, today the download links stopped working.

When I offer identical instructions to a regular GPT-4 prompt it works perfectly.

PS Why is there no way to report this directly to a support team rather than create public posts like this?