Another pop up will come up, click “Let’s Do It” and then you will have to confirm 2 txs, one tx to unlock (approve) the Dai and one tx to execute the withdraw (it will say it is a 0 ETH tx)…. 1. If you are using a normal browser with metamask, sometimes the pop up doesn’t pop… click that cute little fox with a 1 next to its face to get it to show 2. PLEASE BE PATIENT… the ethereum network can be slow… leave the browser window up and on this tab, walk away from your computer if you have to.