The CiviCRM (4.7.14) membership sign-up page for our website will not always connect to Paypal (standard), our payment processor. Sometimes it works, mostly not. In Firefox, the error message is: "The page isn’t redirecting properly Firefox has detected that the server is redirecting the request for this address in a way that will never complete. This problem can sometimes be caused by disabling or refusing to accept cookies." I have checked settings in CiviCRM and with Paypal, and everything looks OK as far as I can tell. Looking for help to get this issue fixed.
Our site is on Joomla 2.5.20 and appears to be up to date. To the best of my knowledge, the connect to Paypal worked fine until about 6 months ago. Since then, CiviCRM was updated to 4.7.14. The problem is not unique to Firefox; complaints also come from people using Edge, Chrome, Safari in different countries all around the world. Doesn't seem to be a difference for a logged-in user or non-logged-in visitor.