Is it possible to open the camera app by clicking on a link block? Here is an example on the invisalign website, where you can click on the button to take a selfie with an installed camera app on any device.
didnt see your post earlier. I hope its not too late for any answer.
Kind of solved with a little workaround. I implemented a typeform with a upload function. If users click on upload, they can choose between the camera app or a filebrowser. So it does the job