How do I access PHP files? I'm having the problem where when people try to click on a contribution page, this error comes up:
Sorry but we are not able to provide this at the moment. We can't load the requested web page. This page requires cookies to be enabled in your browser settings. Please check this setting and enable cookies (if they are not enabled). Then try again. If this error persists, contact the site adminstrator for assistance.
Site Administrators: This error may indicate that users are accessing this page using a domain or URL other than the configured Base URL. EXAMPLE: Base URL is http:// example. org, but some users are accessing the page via http://www. example. org or a domain alias like http://myotherexample. org.
Error type: Could not find a valid session key.
I've found a few examples of the same thing happening and people keep suggesting that I make sure my base URL is the same as in the civicrm.setting. php file. I found the base URL (it looks fine, and we haven't changed the domain name or anything) but how do I access the file to compare it to? We're on Wordpress v 4.6.1.