1) Sign in to Gupshup
Go to Gupshup https://www.gupshup.io
Select the Login button
Log in with the email address you used to create your account.
2) Upload image/logo
Once in the dashboard, select the "Profile Settings" option. From there you can upload the image or logo you want.
It is recommended that the size of the logo be 640x640px (square) and with a maximum weight of 5MB