No Hitman it is not just you...some time ago, Dan did some upgrading to the site, I think it's called CloudFlare. However, my computer is outdated and after that I was unable to access the site for more than fifteen minutes at a time, and even that I could only do once or twice a day.
So Dan did some research and fixed the site (something called m_security) so that I no longer have any difficulty at all, everything works perfectly for my old Apple laptop. But just after that, other people began mentioning the kind of situation you describe.
I don't know if they ever found a workaround or not, I hope they did, they will tell you when they find your post....