"HTTP ERROR 500" while logging in Certification portal

I tried to take my RPA Advanced developer test yesterday but I got “HTTP ERROR 500” while logging. I am still getting same error. I logged in to link shown below. I was able to access the portal two days back but since yesterday I am getting this error. I sent an email to tech support on UiPath website but they didn’t respond yet. Is there any issue with certification portal?
Thank you
https://login.microsoftonline.com/uipathidentity.onmicrosoft.com/oauth2/v2.0/authorize?p=B2C_1A_UiPath_IDP_signup_signin&client_id=db8ab2f1-eac6-4d7f-8307-cf87612926ff&nonce=defaultNonce&redirect_uri=https%3A%2F%2Fcertificate.uipath.com%2Floginuipath&scope=openid&response_type=id_token&prompt=login

It might be a temporary issue. I just tried and it is working for me. Can you try again from the below link?

https://certificate.uipath.com/account/login

Try login in some other browsers