Can't login as root in admin panel after OS update

Hi, how are you? After updating the operating system (I'm using almalinux the centos web panel doesn't allow me to log in as root in the admin or connect via ssh, even though the credentials I enter are correct, the system rejects me. Could you please give me a hand? Thank you very much in advance

Boot your VPS/Server in "single user"/"rescue" mode and check logs:

/var/log/message
/var/log/secure

to investigate the problem.

Make sure you finished the OS upgrade process successfully and all RPMs are compatible with the current OS installed on your VPS/server.