Hello and welcome @Mrjo,
For this you should host the 360 picture/video somewhere where it works as expected and then use the iFrame component to embed the item.
Will the host matter as well to play a 360 video on iPhone without making it look like a fisheye? Since works properly with other browsers and even Andriod, but not on iPhone.
Does the 360 video look like a fisheye when using Chrome and Safari on the iPhone? And is it only a problem with viewed within an iFrame in Evolve? I think the issue may lie with how they’ve been created. Have you created these from scratch or using a tool?