To attach a photo to your chat in the Zipline app, when using the chat composer, tap the paperclip icon in the lower, left corner.
This opens a menu to allow you to select your camera to snap a photo, your photo library to add a photo you took previously, or a file of the image you want to upload.
Tap the option that works best for you.
The microphone icon also allows you to record a message to send to support.