You can update your payment information from your GoodRx Gold account by following these steps:
Updating Your Payment Information in the GoodRx Mobile App
Step 1: Log into the GoodRx app and go to 'Settings' on the bottom right. Then, tap your GoodRx Gold plan under your email address.
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Step 2: Tap 'Payment Method' and update your card information, or
opt into Apple/Samsung/Google Pay.
Updating Your Payment Information on the GoodRx Website
Step 1: Log in and go to your 'Account Settings' page at the top right-hand corner of any page. 
Alternatively, you can go directly to your account via gold.goodrx.com/account.
Step 2: Locate the "Update Credit Card" section, enter your new card information, and click 'Save Payment'.