Hello SmokeyMcduff !

Usually, this situation means the impossibility to finish the AJAX request. You may check it in the error log of your server (maybe there is the defined PHP error) or track the network response status. You may do it via open this page in Google Chrome and pressing F12 button at once. In the appeared bottom panel you need to switch on the Network tab, click there on any red color lines. Send us the screenshot with it.