3.I cannot add more than one item to cart

This is usually caused by your php sessions not being set-up properly.

In most cases this is due to the session save path (php.ini) not set correctly or at all, the directory not existing or not being writable.
Typically this would read session.save_path = "/tmp" or similar in your php.ini. Refer to the php manual for more details regarding session setup

You should speak to your host / server administrator to get this fixed. WPPizza will not work without session support.

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