Can't set the single reference field of my collection with the reference ID via API anymore

Hello dear forum,
I need your help urgently.
So far I was able to create CMS items with reference fields smoothly via Zapier. I did that with the ID of the reference.
Now all of a sudden this workflow does not work anymore.
Does anyone have any idea what could be the reason for this?
Many thanks and greetings

Here is my site Read-Only: [LINK](Webflow - Jobboard)
(how to share your site Read-Only link)

Can’t access it to see the problem firsthand-
However that would not be caused by your navigation or your hash.

It would have to be caused either by interactions or other custom scripts.

I’d recommend you do the usual, check the dev console for errors, disable scripts on those pages, revisit your interactions particularly scroll-related interactions.

There appears to have been changes made to the api causing issues with multi-reference fields showing as not valid or not present in both v1 and v2 of the API. Several people are reporting the issue in the last week. This is serious and I’m having the same problem. Webflow better get this sorted out quickly!