Twitter user @KhalC204 was trying to pay his friend back money he owed by using PayPal. Two days later @KhalC204 received an email from PayPal. The phrase Nico-nico-niii” was used in his message while he was paying back his friend and it triggered PayPal’s security measures. @KhalC294’s PayPal account is currently inactive because of his use of the phrase “Nico-nico-niii”.
In order for @KhalC204 to reactivate his account, he needs to explain the meaning of the phrase. “Nico-nico-niii” is the catchphrase of Love Live!‘s Yazawa Nico.
Apparently other PayPal users had their accounts locked for the same problem.