Use a gif In profile picture, update to the latest version of the app.
Discussion
How do you save the gif somewhere that it can be used as the link for Damus profile pic?
I used motionleap to animate and saved as gif(there is option) on my iPhone and then used this one website to generate url for the gif https://postimages.org
Uploading to your own server , or use a site like https://imgur.io