Can't claim Astro rewards

I am trying to claim my airdropped Astro rewards in the rewards center at top of page, but the claim button is greyed-out not allowing me to do so. Can anyone help with this issue?

Hey sir, please make sure you have enough (new) Luna (mainnet - terra2) in your wallet for the transaction. Please visit the Astroport Discord for further assistance. The forum is not the place to seek for support. Much appreciated

Hi sir, is classic.astroport can’t claim rewards now? Always tips Failed to claim rewards

We’re sorry, you don’t have enough funds to complete this request. Please try again when you have more funds available.

Hello, thanks for your reply. I am trying to understand why I need funds to claim rewards. Could you please explain and let me know what I need to do to claim the rewards? Thank you!