Username/Password not working for ruckus ICX-7150-C12P

[ramgopaluv]

Hi Ruckus team,

Could one of you please help me with the issue I have. We recently had a power outage and after that ruckus wifi became very slow/intermittent. ISP connection is good. When searching online, found a solution that this happens due to routing code issue and to fix it, have to acces ruckus switch via CLI or web GUI. Here I am stuck. As soon as I connect from ruckus console port to USB on laptop and open  Putty, it asks me for username and password. I tried all the combinations of passwords available and none of them are working. It displays user verification login failure. Could you please help me with how to reset the password? 

Thank you very much.