> Open Langmate app and go to My Page
> Tap on Settings
> Tap on My ID
> A popup will open.
You can (1) copy your ID using the Copy My Info button, and paste it on this contact form message area.
Or (2) take as screenshot of the screen and join the image using the image uploader on this contact form.
To learn how to do a screenshot with your device, please visit those pages depending on your platform:
iPhone / Android