There is nothing wrong. It was just implemented recently. You will need to check what scripts you are using and get rid of anything that uses too much CPU power.
I'm not sure what the problem is. To me both links go to the same login page. This may be because DNS has not updated for you yet. Give it a bit of time and you should see the changes.
It looks like you already have a subdomain and maybe an addon or parked domain is that already? If that is the case you will need to get rid of it in cPanel (including the subdomain) before you can change it to your main domain.
Your site is not coming up at all. It seems like you are redirecting your subdomain to a domain you do not own.
dayakcinta.pcriot.com is your subdomain.
Hello,
We have to be cautious when upgrading software on production servers as it tends to mess up peoples sites. This will be upgraded when we have a chance to test it out first.