As of January 31, 2017, you’ll only be able to create and edit text ads using the expanded text ad format. Your existing standard text ads will continue to serve alongside expanded text ads, but you won’t be able to modify their content. You will still be able to pause and enable them. If your standard text ad was created prior to January 31, 2017 and is still awaiting approval, it will still be reviewed. We strongly encourage you to take steps to transition your standard text ads to the new expanded format.
You can modify your ads directly by selecting Ads in the type list and then choosing the type of ads you want to view. Those ads will appear in the data view, where you can edit them directly or use the "Make multiple changes" tool to make several changes at once. For detailed instructions, visit the articles below.