How do you work with clients to promote on Facebook?

Question

Facebook

Hello!
A question for those who are engaged in promotion on Facebook and Instagram - setting up advertising in your Facebook account:
Do you work on your account (the client provides you with access to an advertising account) or on a client account?
I registered a new account for one client - in his name, I just didn’t upload a photo. A week passed, Facebook blocked access to the page, and asked to send a real photo of the account owner. Why is this at all?
Many clients have a personal account, and there is a business account. They do not want to promote the business in their personal or provide access to it at all, so they register a new one - for business, advertising. But, if you send a photo to Facebook when requested, they will see that he has 2 accounts - can they ban both? Because it is forbidden to have 2 accounts there, and to a fake name too.
How can this be bypassed?

Answer 1

it’s not paypal
they won’t ban
send another photo
they asked because it looks like your acc
they don’t know whose credit card you put in, so they insure in advance