Why can't I claim my rewards on sushi?

I simply cannot claim my rewards on the Sushi Moons/ETH pool.

I've put in the moons and ETH, staked my position, it's been a few days so the rewards are there, and the claim button is there. But when I press it, nothing happens. There is no Metamask prompt or a pop-up, nothing. It's not a big amount, a few moons, but I'd like to put them into the LP as well.

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For your information, I'm on PC, using Chrome and Metamask, Arb Nova network, v2 of the Moons/ETH LP.

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Anyone had this problem? What are the solutions? I've tried googling it, nothing comes up. Tried their sub, no info there.