UPDATE:

We're glad to inform you that we have fixed the issue regarding the Co-op reward. You should now be able to collect the rewards with no problem.

Thank you for your patience and understanding.

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We're aware that some players are having an issue with the rewards. Our team is looking into the cause, and we're working on having this fixed as soon as possible.

We will share any news with you on this article, so please check back regularly.

We appreciate your patience and understanding.