Can't login in azure free student account with my student mail id.

I am not able to login to student account with my university email id. Although I have already verified my student id in github student pack. I am getting error when trying to verify in azure. Whenever I try to write my university's name it gets automatically deleted. I have tried clearing all the browser's cache and used incognito mode as well. But the same problem is occuring. Please help me solve this issue. Thank you.