I am unable to send Non Whitelisted headers to my web application

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**Describe the bug**
We wanted to send some extra headers(like auth token and some others) to our web page, when it is opened as a custom tab from android app. We followed the same procedure as mentioned in this link https://developer.chrome.com/docs/android/custom-tabs/headers/. And it worked fine in our devices. So we launched our app to production. But now our customers starts seeing issues, because the token is not getting passed to webpage. We could not find any cause.

And it occurs randomly in all the devices.
We need some help on this

And it is exactly same as he mentioned in this stack over post.
https://stackoverflow.com/questions/68461684/digital-asset-link-verification-fails-sporadically-unable-to-draw-any-pattern-o