help pls guys
I'm trying to select the first item from my wallet on which build airdrop but it doesn't let me do it and writes this, this is the first time I see this wallet and I don't understand how to fix it

You have to claim/commit through warpcast custody wallet. 
I had something similar so I had to import my Warpcast seed phrase into wallet to claim. I wasn't able to claim through my connected wallet but it worked with Warpcast seed phrase. 
Import your warpcast seed phrase into wallet and claim, it will work. 

Go to settings (Warpcast settings) > Advanced> Reveal Seed(recovery)phrase> copy this seed phrase then go to Coinbase Wallet Or any other wallet and Import this seed phrase there (make wallet with seed(recovery) phrase from your warpcast account) then connect this wallet to build website and claim token.