Trouble Acessing the Forum

So, the past few weeks I am having trouble to access the forum, it works sometimes, but mostly it won’t, I can access the main website but when I try to open any Topics it gives me an security error, no matter what Browser I use, with a single exception, Tor Browser

It happens both at home and at work.

Any help on this?

It might help to mention where you re accessing from.

From Itajai - SC - Brazil