[Web Player] not supported in WKWebView on iPadOS?!

[mksm_klsnk]

Hello,

I am trying to load Spotify Web Player in a WKWebView (https://open.spotify.com).
On my iPhones (7 and XS) everything works fine.
However, my iPad (6th generation) says that the web play is not supported.
Safari also loads the web player correctly on the iPad.

Can you guys tell me why this is not working on the iPad?

All devices have iOS / iPadOs 14.3 installed.
I have also attached screenshots.

Thanks a lot!!