SYQEL uses Stripe as our billing infrastructure.
To make any changes to your account or update your credit card please visit the customer portal here: https://pay.syqel.com/p/login/3cs8zg7mYb3r1AA8ww
Be sure to use the same email as you used when you signed up to SYQEL.
Alternatively, you can login to SYQEL and click on “Billing Center” from the account menu