https://wccftech.com/sony-ps-plus-ps-now-subscription-stacking-shut-down/

Sony launches their new more expensive PlayStation Plus tiers in June, and those hoping to nab themselves a sweet deal by purchasing pre-paid subscription cards are out of luck. Most notably, many thrifty folks picked up on the fact that existing PlayStation Now subscriptions will roll over to the new PS Plus Premium tier when it goes live. A 1-year card for PS Now only costs $60, while 1 year of PS Plus Premium with be $120, so people began snapping up PS Now cards to “stack” on their existing subscriptions, potentially getting themselves years of PS Plus Premium at a nice little 50 percent discount.

Not so fast, says Sony. In recent days people have discovered they can’t redeem their pre-paid cards to extend their subscriptions, and Sony has confirmed this is intentional…