"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

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

Try login in some other browsers