Long story short. I make Twitter accounts manually, I`ve got a nice VPN to hide my IP which worked just fine to make hundreds of accounts for about 7 months until a couple of weeks ago, when Twitter KNEW somehow it was ME creating the SECOND account and requested a phone number to verify the account. Changing web browsers does not work. Changing the IP address does not work. I also tried a different VPN and it`s the same story. Deleting cookies does not work. Since there is NO POSSIBLE way for them to know my real IP, how do they know it`s still me?!