I got my device and started it up, it ran great for the first day then the hashing dropped by 50%. I looked at miner status and saw that I had the "xxxooo xxooxx" problem. I shut it down, rebooted, problem solved. Eh, not quite, happened again later and within a few days my miner stopped hashing altogether. It was still running but when I tried to check the miner status it logged me out of the webui. I logged back in and the miner status page was blank.
The device responds to ping but when I try a command via webui or ssh it stops responding and typically logs me out. I then have to log in again to complete the action. I'm unable to update firmware, the miner still isn't hashing, and the logs show no errors that I can detect and all services appear to be running.
Has anyone had an issue like this? I've contacted Bitmain support but they have basically been non-responsive other than "we're researching it" whatever that means.
It sounds to me like you have an IP conflict. Another device got assigned the IP address that you assigned to the Ant, and when you connect to the IP address, there's no ssh-server or web-server on that IP address awaiting the connection.
Try to see on your router what are the devices connected and if you can, maybe you can disconnect some of the wifi-connected devices (ie tablets/cell phones/laptops).