4G not working?

[Brownshoe]

For some reason while I'm at work I can't get on the website with my phone. I think it has something to do with the 4G connection, because whenever I'm at home and using my wifi I can get on fine from my phone. I can still get on other websites, and watch YouTube videos and all that too, so it's not that I'm having connection issues. I used to be able to get on fine while at work, but the past couple of days it's been saying the website is down. Is anyone else having this problem or is it just me?