Flexolo We will indeed add a transfer button into the app 🥳. This will make it easy to send tokens from our sidechain to mainnet Ethereum, and then all the way to a centralized exchange or another wallet. You need to cover your own Ethereum gas fees like everyone that uses Ethereum, as @QMM alluded.
Same with Uniswap, it runs on Ethereum so you have to pay gas fees and liquidity fees. Centralized exchanges have generally much higher fees without Ethereum gas. Fees are all around us, just enjoy the zero fees while you're in the Morpher trading bubble 😉