Getting error message from embedded URL

[Bryan_Wade]

I am embedding a website into experience builder. The website displays its login page but when a user tries to log in an error message pops up that reads "Please configure your browser to accept cookies from us".

The URL works just fine in my browser if I open it separately. I only get the error message when trying to embed it into the experience builder.

[JeffreyThompson2]

This is probably a result of a script being removed by ESRI's HTML Sanitizer. Only a limited set of HTML elements are allowed in the Embed widget. Notably removed elements include script and iframe.

https://doc.arcgis.com/en/arcgis-online/reference/supported-html.htm