It shows this blank screen with this version of Firefox. Works OK with Edge and Internet Explorer.
I hope you are well. Please try using google chrome when accessing the freshphone web portal. The website was developed on google chrome so it is best to use that browser.
The site used to work fine with Firefox. Please fix it! I'm not going to install Chrome just for this site.
Seems to be working fine for me on firefox v67.0.2, please update your browser and try again, alternatively maybe its an antivirus blocking something.