We strongly recommend that you don't buy any in-game resources (coins, boosters, etc.) through third-party websites.
These offers are likely an attempt to gain access to your personal data and credit card information. Keep in mind that, in all probability, you will never receive the purchased resources.
The only safe and secure way to purchase in-game resources is directly through the app on your device. Purchasing in-game resources from any other site is a violation of Playrix's Terms of Use.