You should be able to if you connect your Metamask wallet. After that, go to kingdoms, approve the contract then stake the CUB into the kingdom.

The contract address for CUB is 0x50D809c74e0B8e49e7B4c65BB3109AbE3Ff4C1C1. Add that token to your metamask wallet to make sure you have the CUB in your wallet.

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