Hello,

There might be some problem in server or in the network. In the first step, you can close all the open tabs and windows. make refresh of the OS  then open the same tab again from the start. Try to get the page if not then  you have to contact to the board regarding the problem. They can help you out with proper guide. They might have given contact info or toll-free number to contact. Better to put a mail also so that you recieve reply soon.

These are important credentials so these things are to be taken care of immediately.

Hope it helps!