The PlayStation network went down for nearly the entire day on January 4. Sony has issued a code to PlayStation Plus users containing a code that extends their PlayStation Plus coverage by a single day in order to make up for the outage. If you’re a PS Plus user affected by the outage, you should receive this message including a redeemable code:
Due to the recent PlayStation®Network interruption we are giving you a 1-DAY extension to your PlayStation®Plus membership. Please redeem the following voucher code by March 31, 2016, 11:59 PM PST:
Sign in to redeem your code.
The extension will be applied to the end of your current membership. This applies to all accounts that had an active PlayStation®Plus membership on January 4, 2016.
Thanks for your patience during the service interruption.