To view items click on the event you're attending, then click the three horizontal lines on the bottom right of your screen.
This will open a menu. Click on "view items." This will show you all of the items in this auction.
There are 3 icons on the bottom of the screen. The first icon shows auction items you have been outbid on (and need to increase your bid). The trophy shows items you're winning. The binocular's shows item's you're watching.
When you click on one of the items you are interested in you will see the item description and current minimum bid.
Click on the dollar amount to enter your bid, then slide the checkmark to the right to place your bid. You will receive a text telling you you're the highest bidder. You will get another text letting you know when you have been outbid with instructions on how to increase your bid.