PayPal Merchant Account Reliability

Frankly, over the last month, my Paypal Merchant account has been a lot less reliable than I expected. I keep getting this message:

History Search is currently unavailable. Please try again later or call us at 866-837-1851.

Sometimes Paypal gives me a security message about verifying the ownership of my account. I called once but it was time-consuming. Usually, I just wait a few hours until the message disappears.  IS the paypal merchant account getting flaky?