Perhaps mostly because the security system is automatised, just like User here at Reddit get banned and have to struggle to get the ban lifted.

Try Something New Played 2 hours in total. Upcoming 7th Anniversary Event including Daily Emblems will provide some Orbs, also Summer Event with its Diving Mini Game, which will begin after Maintenance on 28th July I. Combo feature will be unlocked permanently on all your characters. You can buy Gender Switch Stone at the CB, if available and if you want to save your Orbs, but it'll be expensive (about 13m and above). Once you get it, you can delete this character.

Create a new character and buy any skill sets in the library, spend at least 1 SP on 10 different skills. Something nobody would admit actually ofc or just was unaware that any action could've been considered as such. TIP: Get this emblem as soon as you start. Those people may have violated TOS with 1 of their Accounts, so the ban was applied to part/all of their known Accounts, just as it's stated in 4.2. Only the wording was slightly changed, to clarify some points, the content itself of the TOS and Penalty wasn't touched nor changed. It's not against the TOS to register multiple Accounts to 1 e-mail address, it's just not possible, because the rule for the database allows only 1 Account/e-mail address, just like every forum, IM or wherever you can register an Account.