When adding Credit Card to Facebook Ads, I get Error.

Paying to help fix or prevent Facebook ads issue. For past week I have been making facebook ad accounts that have $250 daily spending limit. Its all great. I can make my own vcc and normally it just worked fine. today I got the following error on 5 accounts: Ad Manager Error Our systems have detected unusual payment activity on your account. As a security precaution, the payments functionality on your account has been disabled and all of your ads have been stopped. For more information, please contact us Anyone has an idea why is it? DO you think its because I didnt clear all cookies? IP problem? Should I get proxy or vpn? VPN can become time costly to set up , especially when trying to make 30+ accounts. I would appreciate idea how to fix this and prevent it from happening and in return I could hook you up with free accounts or pay you