Hi Evgenia, Thank you for posting. "Sync" button basically updates the product lists from to to device. The lists contains apps, books or music etc you have purchased by using amazon account from retail website or in other device. Could you please let us know what exactly you are trying to achieve by clicking this button?
Hi Evgenia, In Kindle 1st gen device there is no system application named "Amazon GameCircle". Instead there is one named "Amazon Game Services". Please ensure that you have 1.1.12 on your Gen1 Kindle device listed as Amazon Game Services. That should work with GameCircle SDK 2.0. We will look into trying to update the FAQ. Thanks for getting back regarding the FAQ issue.
Thanks Evgenia, Actually you do not need any additional setup for GC 2.0 in your Kindle 1st Gen device. The version of Game Service you have installed in your device is compatible for for latest Game Circle.Pplease let us know in case you are facing issues while running the GameCircle 2.0 features in your app?