I tried to logon on to Ebay but it refuses to allow me to login to my account. I sign in with my username and pw, but then it immediately logs out. Is this the result of Ebay blocking the Tor browser, or am is this Tor blocking some security flaw in the Ebay site?
There are a few reasons why you may not be able to log in to a website with tor browser. The three main ones would be
The site might specifically be blocking tor users from logging in.
The site rate limits requests or logins by ip address. Since ebay is a popular website and all ebay users exiting from the same tor node appear to have the same ip address, ebay might be blocking all but 10 requests per minute (for example).