I just realised why the iOS on iPhone XR would not upload from Mediapress in Safari or other browsers on the mobile. iOS as default prevents uploads from browsers (obviously from a security point of view, justifiable) but forgoes warning the user why. I was setting up an OPPO A92 (based on android) and then the browsers ASKED me if I would allow uploads (something user friendly that is sadly lacking in iOS) so Bob’s your uncle, now the upload works, now that I have allowed uploads on the iPhone XR.

Thanks for help anyway, but there are other support topics coming up from new problems I found with Mediapress which I will detail in other forum topics.