To access your messages in the App, tap on the "Messages" at the bottom of the screen.
Once in the messages you will see the list of all your messages. To open a message, tap on the one you would like to respond to.
A message will open where you can mark if you are interested or if you would like to politely decline the offer. Tap on the option you want, add your message and send to the member.
To be able to set the details of the exchange and confirm it, please go to HomeExchange.com site.
You can also check your archived messages, registered exchanges... by tapping on the "Inbox" at the top of the page. A drop down menu will open where you can scroll to the folder you want. Tap on the "done" and all message in that folder will appear.