Creating a pool on mumbai

Hello there,

I’m trying to add the pair MATIC <> SAND on mumbai (0xe03489d4e90b22c59c5e23d45dfd59fc0db8a025) but the SAND token is not listed on and don’t find how to add it manually (address, name didn’t work).
And it worked on goerli

Am i missing something ? Thanks for helping me out