Hello,
a few months ago (might even be a year ago) I got an official email from Bungie which asked me to answer a few questions in a survey, and promised me 1000 silver "a few weeks after the survey".
I actually received the silver automatically a few weeks after but in the Eververse store it says that the 1000 silver are on a different plattform. I play on PC, not on console or anything, and I don't know how to access the silver now.
Please check the screenshot.
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You have a PSN account linked, so I presume that's where the Silver is.