Adobe Portfolio does not manage billing or payment. You will need to manage that within your Adobe account settings. You can access this from two areas:
- From your Portfolio account
- Within your Adobe account
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Within Adobe
- Visit accounts.adobe.com while logged in
- Select appropriate option
More on accounts.adobe.com https://helpx.adobe.com/manage-account/using/update-billing-information.html
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Within Adobe Portfolio
Once logged in into your Portfolio account:
- Click into Settings in the left-hand panel
- Click into Your Account
- Click Manage your account
This will take you to https://accounts.adobe.com where you will be able to edit or add new credit card information.