Website down

Hello,
Most of our members are having sporadic issues loading our FTH website. I have cleared my cache, switched browsers and cross my fingers whenever I try getting the website to load. Sometimes I can get on without issue but other times no matter what I cannot get the site to load. Others have experienced this same issue sporadically. I also notice that when I am in, if I hit the back browser I get the same error notification too...sometimes.
Does anyone have any advice on how we can stop this issue from occurring? It has only been happening in the last month.
I have attached a screen shot of the notification. Our website is nicor01.toastmastersclubs.org/ . Our club # is 7655438.
Thank you in advance for your assistance,
Laura

7655438.toastmastersclubs.org/ is working correctly.

Are you accessing FTH from work?
Have you asked your IT folks if they are blocking FTH IP 50.19.253.65 ?

Hi Brian,
Thanks so much for your response!
I have tried several ways to access the website....at work on the wifti on my Toughbook, on the AirCard on my Toughbook and at home from my home router with my Toughbook. I still get the message sporadically. Sometimes I can get on and other times, not so much. This only just began within the last month. Same problem with other members of my club.

When you are having the issues are you using a VPN?
Please provide your internet IP when you are having issues.

"When you are having the issues are you using a VPN?
Please provide your internet IP when you are having issues."

I do not know what that means. What I can tell you is that it is sporadic. So I do not do anything to actively use a VPN. It's either always on or always off, I assume. I am sitting at work right now using the company's wifi and I can log in to our website right now. I am emailing back and forth with another officer in another office, she cannot and has not been able to get into our website for a few weeks.

What is the other Officers IP address?
We are not having any issues.