Hi Gary!
Thanks for your question. Unfortunately it's not possible to update your payment information via the mobile app but you can update your billing information via the web app by taking the following steps:

To access your Plans & Billing page follow these steps:

1. Log into your Lucid account.


2. Click your profile icon or initials in the top-right corner.


3. Select Account Settings from the dropdown menu.


4. Click Plans & Billing from the navigation menu on the left.

To update your credit card information follow these steps:

1. Under “Payment method” select Update. 


2. Enter your new billing information.
   
   
   
   • From here you can update your name address and payment method. 
   
   
   
   


3. Click Save changes.

You should be all set from there! Let me know if you have any issues and here's a relevant Help Center article with more information. If you're running into trouble with this please fill out this form to reach the billing department.