On January 4th 2016 the PlayStation Network experienced a few issues and was completely down causing distress for PlayStation gamers worldwide. To make up for the inconvenience Sony announced last week that it would be providing subscribers with a free-day to access PSN to make up for issues experienced.
Now Sony is making good on their promise and has already started sending out PSN members extension codes via email to allow them to access the free-day. So check out mailboxes and spam folders now.
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.
Sincerely,
PlayStation Network
Source: Destructoid