How do you unblock roblox if its blocked by the internet connection not a firewall?

I may have tried that before..a long time ago...but here is what i remember:

Have you ever heard about Firewall? the Firewall blocks all the thing in the internet that it is not sure about its safety.(Roblox is safe)

Now the thing you need to do..Is look for the Firewall thing and when you saw the Roblox button on the Blocked sites part you uncheck the Roblox button and there, the Firewall doesnot block it anymore....Well to know where the firewall is,try to search it on the internet. Hope this helps!