Everyone knows that pinterest has one of the best otions for profile cover photo, making it as a collage of a users board. You have seen it many times. I literally cant do that. Ive spent 8 hours using whole type of devices, android, ios, windows, mac. I tried it in app and in different browsers, I tried it for business and for personal profile as well. There is no such option for me. Simply I can only use picture from device.
The default profile cover is a collage of your most recent pins, however, if you want to customize it will a curated collection of pins or something else all together, you'll have to create it in Canva or another editing program.