Had the same problem and I can't get on the website now but can mine. I can get on the website from a different computer though. Very strange.
Go into your miner.config and check that the port is right. Sometimes starting the AIO wallet changes this setting. Then check the chosen_port.txt also and might as well make sure the other chosen_pool.txt has the proper url in it. This can get screwed up by the AIO wallet.