If you are having problems with PayPal
1. "Your session timed out" error message...
Some people are getting a "Your session timed out" error message right after
you click on the [Pay] button on the PayPal page. This then returns you to
the PayPal login page, and no matter how many times you login to PayPal you
will continuously be returned to this page. The error is caused by some of the security and/or privacy settings on your Internet Explorer browser configuration.

During PayPal transactions they save some cookie information locally on your computer while the transaction is being processed. This information is necessary to track exactly what you
have purchased. However, the security and/or privacy settings on your browser may interpret the activity as harmful or just another useless cookie and "block" the creation of cookies on your computer. This results in the PayPal services inability to complete the transaction and you get the time-out notice. Adjust your settings to allow all cookies and proceed with the transaction. Afterward, you can go back and delete the cookies. We always do.

2. "If the PayPal shopping cart screen shows an item that you did not purchase, but perhaps it was something you purchased long ago..."

Go into your web browser settings page and delete cookies. This will force PayPal to create a new cookie, and your PayPal transaction will start to work properly.