Yes. You allowed a third party to access your account, which is a breach of EULA Section 1(Licenses)
You ALSO allowed a third party to "buy"(It was cheating, not buying) resources in-game for you, which, again, is a matter between you and said "third party", EULA Section 5.
You didn't read EULA? You DID agree to THIS:
5. Payments and purchases of virtual goods
Rovio may license to you certain virtual goods to be used within Rovio Services. Unless otherwise specified, these virtual goods shall be deemed an integral part of the Software. These virtual goods may be licensed both for a fee using “real world money” and without any separate fee, as applicable from time to time. These virtual goods may also be licensed by using third party virtual currency, such as Facebook Credits or by using separate activation codes.
Any and all virtual goods are licensed to you on limited, personal, non-transferable, non-sublicensable and revocable basis and limited only for non-commercial use.
Please note that any payment for licenses for virtual goods or redemption of third party virtual currency is always FINAL AND NON-REFUNDABLE. Also please note that if you purchase Facebook Credits from Facebook, such transaction is governed by the agreement between you and Facebook and Rovio is not a party to the transaction.
Rovio may manage, regulate, control, modify or eliminate virtual goods at any time, with or without notice. Rovio shall have no liability to you or any third party in the event that Rovio exercises any such rights.
SUBJECT TO MANDATORY LEGISLATION, YOU ACKNOWLEDGE THAT ROVIO IS NOT REQUIRED TO PROVIDE A REFUND FOR VIRTUAL GOODS FOR ANY REASON, AND THAT YOU WILL NOT RECEIVE MONEY OR OTHER COMPENSATION FOR UNUSED VIRTUAL GOODS, WHETHER YOUR LOSS OF LICENSE UNDER THIS EULA WAS VOLUNTARY OR INVOLUNTARY.
Here's the full document if you're interested:
http://www.rovio.com/eula
Note that you agreed to these terms the moment you opened the game and started playing.
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