Staking ETH via Everstake on Trezor

Hello! Do you have somebody experiences with this? Is it safe to stake directly on Trezor HW via company Everstake? I hold some akount of ETH there for years and now thinking about try to stake it there. I know about staking on centralised exchanges for example Kraken, Binance. But i have never tried it on Trezor. At beggining They want some fees from me, for what is it? For moving my eth to staking pool? And when i will want to stop it, there will be next fee for unstaking? How it works here? Thank you very much for your answers and time!