Bugfixing checkout Magento store (login issue and payment bug)

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
We run a Magento store and need two things in the checkout fixed.

1. At the moment it is not possible to place an order when the customer is logged in in his user account.
2. Creditcard as a payment option does not work. When trying to place the order nothing happens.

We need these two things fixed.

Skills required:
HTML, Magento, PHP
About the employer:
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