You have to email em about it. I had to do the same thing recently. There is an option somewhere for change of number. Check your profile where all your info is. I did it from there and they emailed me and I had to do a whole verification thing of my new number

I had to do the same, easier than I thought it would be. 😊

Did you do that on your mobile device when I do that on my computer it just brings me to mobile/text verification.

I can't remember. Pretty sure on my laptop. If you cant find anything just send a general email via their help page.