Under these 2 conditions will your swap/transfer fail:
1. Price exceeds the slippage limit.
When choosing ETH network, if the price exceeds the slippage limit, the swap/transaction will fail. (What is Slippage?)
Users can click  on the navigation bar to set reasonable [Slippage Tolerance] to ensure successful swap/transfer.
2. Gas Fee is very low.
If Gas Fee is not enough when conducting a swap/transfer on ETH network, the swap/transfer will fail. You can increase Gas Fee via [Advanced Settings] before clicking [Confirm] button to ensure successful swap/transfer.
You can refer to the Gas Tracker to choose a reasonable Gas Fee.