I am sorry to hear about the trouble while uploading your profile picture. Could you please confirm if you are trying to upload a profile picture using a PC or Mobile App?
Try to clear the cache of the website and then upload it through Desktop. Also make sure the picture you want upload much have a great clearity and your face should be nicely visible, so that upwork can authorize it without any issue.
The fact that this problem exists in this forum from 2016, and still causes issues (for me today), and people all tried different browsers, different laptops, cleared cache and cookies.. Perhaps it's time to fix this issue on your end UpWork?
I have photos from photoshoot, that I use on all public platforms. Yours is the _only_ one not accepting them.
Come on.. It's not that hard to make an image upload work 🙂