PayPal FAQ:

In order to enact a transaction with PayPal, you must enable session cookies. To do so, please follow the steps below:
For Internet Explorer 5.5 and below:
1. Click 'Start', then 'Settings', then 'Control Panel'
2. Double-click 'Internet Options'
3. Select the 'Security Tab'
4. Click 'Custom Level'
5. Scroll to the prompt 'Allow per-session cookies'
6. Select 'Enable' and click 'OK' to save your changes
7. Click 'OK'

For Internet Explorer 6.0 and Windows XP:
1. Open your Internet Explorer browser
2. Click 'Tools' located at the top of the browser and select 'Internet Options'
3. Click 'Privacy' located at the top of the window
4. Click 'Edit' located near the bottom of the window
5. On the line provided, type https://www.paypal.com/ and click 'Allow'
6. Click on 'OK' to exit all screens and log into your PayPal Account

To enable cookies using Netscape on a Macintosh running OS9.X or lower:
1. Click 'Edit' from the top bar
2. Select 'Preferences'
3. Select 'Privacy & Security'
4. Under Cookies, select 'Enable all cookies'
5. Click 'OK'
6. Go back to the Web and click 'Reload'. You should receive the most recent versions of our web pages
7. Shutdown all browser windows and open a new one

To enable cookies using Netscape on a Macintosh running OSX:
1. Click 'Netscape' from the top bar
2. Select 'Preferences'
3. Select 'Privacy & Security'
4. Under Cookies, select 'Enable all cookies'
5. Click 'OK'
6. Go back to the Web and click 'Reload'. You should receive the most recent versions of our web pages
7. Shutdown all browser windows and open a new one

If you continue to have problems, we would suggest clearing the cache
for your computer or device and clearing cookies.

Since cache or temporary Internet files are used when you return to
previously viewed web pages, if you experience difficulty viewing a web
page, the cache may be corrupted. If you do not clear your cache files
periodically, you may experience longer loading or browser closing
times. In order to improve your performance on the web and specifically
while visiting our site, we suggest that you occasionally clear your
cache.

Below are instructions to clear your cache for various browsers. If
your browser is not listed below, we suggest that you use the help
section of your browser or contact their customer service center.
Internet Explorer:
1. Click the 'Start' button
2. Select 'Settings' and click 'Control Panel'
3. Double-click on Internet (or Internet Options) and select the General tab
4. Click the 'Settings' button in the Temporary Internet Files section and choose 'View Files'
5. Click 'Edit' and select 'Select All'
6. Press the 'Delete' key on your keyboard. If prompted to verify that you want to delete your cookies, click 'Yes'

Netscape:
Your computer stores copies of frequently accessed pages in the memory
cache or disk cache. This way, the computer doesn't have to retrieve
the page from the network each time you view it.

To set the size of the memory cache or to clear it (Windows and Unix only):
1. From the 'Edit' menu, choose 'Preferences'
2. Open the 'Advanced' category; then click 'Cache'
3. To clear the 'Memory Cache' immediately, click 'Clear Memory Cache'

WebTV or other TV devices are generally able to clear the cache by
unplugging the device for a 5 minute period or longer.

Next, vary the selection between the type of payment you are trying to
make. For example, if you chose 'Auction-Goods' and it is failing or
staying in a 'loop', you may wish to try 'Service' for the payment
type.

If you are still unable to pay using this method, you may be
experiencing technical problems because of a specific configuration of your
system, slow Internet connection speed or congestion on the Internet
overall.