I can try to get the numbers tomorrow. The browser that we are using is any patient, that visits our dental office, can connect to the free wifi, and it will direct them to our Facebook page first, letting them check in. So, the browser is Safari, I guess? The devices that aren't working are any patient's iPhone or whatever mobile device that comes into our office.
Before the tech-support agent made a downgrade the software, A person who connected to the network would be directed to our Facebook page, they would check in, and then it would say internal service error. Now after the tech-support person's advice, the Facebook option is not even available anymore. My tech person updated the firmware to the latest on the D-Link website. I think it's so new, that there really is no support for it yet.