please help!

I was sure I posted this a few days/week back… Can’t find it here though!
I can’t log in to my GS account using my laptop. I could see done threads earlier, as a guest, but now no matter what thread/ blog I want to see I get a horrible blank page with a message: error 400

I’m typing this from my phone, but it’s quite uncomfy surfing GS using phone
Please help me sort it out!
Thanx