Moving STAKE through the Omni Bridge to xDai - Tokens don't show up

I moved STAKE through the Omni bridge to the xdai chain but the tokens don’t show up.
The transaction has been successful. I tried adding a new coin (STAKE) to the xdai chain and it shows 0.
Please help

STAKE token on xDai has a different address. You need to add it to Metamask

Thank you, but how do I do that?