There are a few things you can try in this instance: 1. Make sure you have a stable internet connection 2. Make sure you have the right token to use for gas. You will need some ETH for erc20/Ethereum based tokens, and some GO tokens for GoChain/OMI transactions 3. Try changing the gas amount when you process the transaction 4. Do not turn on the hardware card until you are prompted to do so by the app. There is a battery saving feature which may cause it to time out. 5. Wait a few seconds between each confirmation (press of the red button) to allow the app and hardware card to sync properly