I’m sorry, but only the regulars can create topics in that category, and you are member. You can see this topics for more information of this:
How to level up on the Roblox Developer Forum,
About the Studio Bugs category
About the Website Bugs category.
About your problem, I don’t have any idea, probably the issue is related to the internet connections, though when I have this problem, is because the roblox servers are in trouble.