Has anyone found any solutions to the 2checkout issues?

Here are some of the issues:

After the checkout of an item the client is redirected to my checkout_success.php page, this is fine, but I noticed that:

1. Cart does not empty after succesfull checkout.
2. I do not get an email verifying an order has been placed at either of the email addresses for the stores.
3. Nothing shows up in the admin panel of either one of the sites confirming an order has been placed.
4. Nothing shows up in the clients my account order history (says no orders) to show client the status on the order they just placed.
5. I cannot find where to modify the ID or Order # so it starts numbering the orders from my site.

If anyone can help, I would really appreciate it.

Thank you,