Via the Desktop Website:
Step 1: From the homepage, press the hamburger menu in the top right.
Step 2: If you see your name there already, press my account, otherwise, press Sign in first.
Step 3: Enter your login details, if unsure, enter your email and follow the instructions for a forgotten password.
Step 4: Once in here, you will see your customer ID on the left-hand side beneath your name.
