The Community in more languages
Now the forum welcomes more languages.
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I saw this email too. For a long time I had no gold bars in Jelly Saga but noticed that 50 showed up yesterday before I saw the email. I took that to be the 50 the email was talking about even though I didn't get it until later. I saw them show up after I loaded the app through windows 10, because I had been playing the soft launch version on Android for a long time with no bars.
Mine didn't say anything about getting gold for a different game though, it said 50 gold bars for installing Jelly Saga.