Wipro — issue in login to wipro alumni portal

Hi,

I was having access to wipro alumni portal (https://alumni.wipro.com/#/Aluminiportalui/home)
But now i do not have access to wipro alumni portal due to below error.

404 web site not found.
You may be seeing this error due to one of the reasons listed below :

Custom domain has not been configured inside azure. See how to map an existing domain to resolve this.
Client cache is still pointing the domain to old ip address. Clear the cache by running the command ipconfig/flushdns.
Checkout app service domain faq for more questions.

I need to download some letters from this portal.

Please let me know if there is any change in alumni url.

Thanks,
Rojita sanasam