Cant get remote computer to see vera

I’m sure this has been covered before but I’ve searched and can’t find anythin so here goes. My system is all set up and I can control everything from both my home computer and my Iphone but when I try to log in from work I get a “Unable to communicate with your unit” error. I know it sees the unit because the dashboard loads and it displays my unit number at the top of the screen. One more note, I was able to see it untill I hooked up a camera on the system a couple of days ago. I’ve tried to get in using several different computers. When I try to use findvera it tells me my username was not found. Any suggestions?