Embed (iframe) Synology Drive on own site - maybe CORS problem

[CzarnyLewis]

I have problem with iframe - I want put Synology Drive WEB Site on my site in iframe. I turned off this two options:

and on my website I can open Synology Drive but when I trying loging I have two errors:

dsm.login-standalone.bundle.js?v=1683699872:2
Blocked autofocusing on a <input> element in a cross-origin subframe.

and

Uncaught (in promise)

I tried to add header to server.syno-app-portal.SynologyDrive.conf:

add_header Access-Control-Allow-Origin "https://example.com";

but it`s not working. (Example Domain is my site)

From another thread I have response:

This is the header for the server response, if the expected origin in https://example.com

What you need to set is the request header Origin with the value https://.example.com

Though, I have no idea whether it's the solution to your problem. If not, someone else will need to pitch in. The tutorial is about the mechanics of how to add custom rules, but not about how rules need to look like, as it is highly application specific.

But I don't really understand where to add this Origin

 

[CzarnyLewis]

Small update from SynologySupport Center - my ticket is "I can`t embedded MailPlus WEB with iframe" (Mail Plus WEB has the same problem). This is the answer.
"Unfortunately, we cannot help you any further with your request as this is not supported by Synology. What you could do, however, is to have a look in the Synology forum to see if someone has already dealt with your issue."

This wasn't the answer I expected.