Cannot access my Zoho Desk Agent account

Cannot access my Zoho Desk Agent account

Hi,
Can I ask a question about Zoho Desk?

I have an agent account but haven't logged in for a while, today I tried to log in but there's a issue as below:

1, go to desk portal:  https://desk.zoho.com/portal/veloscientsupport/home
2, click "Sign In" at the upper right corner
3, click " Are you an Agent? - Login here"


Then below "Sign up for Enterprise Plan" page appeared, not the sign in page.


How can I log in my agent account?

Thanks very much! :)