While creating your talk, you are trying to upload profile images for your speakers and they are not showing up as expected.
If your photos are being flipped, stretched, or simply not showing up as they should, we recommend using square images of 500 x 500 at 96ppi.
Do note, the file size cannot exceed 10MB.
Resize the picture and head to Content > Speakers > ... > Edit Record if you're an Event Organiser to upload, or head to your Speaker Dashboard and click on Edit My Speaker Details if you are a Speaker.
If you're a Speaker and can't see that option, your Event Organiser has not configured the settings to allow you access to edit your details. You can contact them with your new image instead so that they can upload this.