Go to my.mobilityplus.be.
Log in with your e-mail address and chosen password and click on Log in.
On the left-hand side of the screen, move your mouse over the icon with the coins and click on Payment methods.
On the next screen that opens, click on Add payment method.
On the next screen, click Continue, fill out your credit card details and click Save.
You can also optionally enter your email, phone number and name.
Next, an electronic signature will be requested via your bank's card reader.
After verification, your payment method has been added and you will see the following screen: