Wants to modify the mobile number of the website

[mrh_bappy]

Greetings to all and I hope all are well in this disaster situation. I want to know a piece of information.
If a buyer gives me a message saying, “Can you send me a quick video, to explain to me how to change the phone number of the site?” Would Fiverr’s Terms of Service be violated if I helped him? Because of the phone number.