Ziflow supports proofing Figma URLs only as live websites. You should only insert Figma links to Ziflow in the following manner:
Please also note that Ziflow will successfully process Figma URLs under these conditions:
The Figma URL that is placed in Ziflow must be available publicly. This means that the URL must have the following setting enabled.
The proxy setting (Settings-> Proofing Settings -> Proof Viewer -> Other options) on the Ziflow side needs to be disabled before submitting a proof.
Supporting materials: