Domain Name Transfer to AWS

Recently I've transfer the domain name jglstudio.com to Amazon AWS, but
somehow it's still pointing to the altervista server. Looks like it's not
being released by Altervista?

Yes, I've being notified that domain has successfully transferred, I don't see the domain in Altervista anymore and I have configured the domain in the AWS route 53. Still every time when I try to go to my domain name, I got a page with red car park under a tree with message "the domain name xxx has been correctly registered" with altervista logo. What I'm missing here?

Thanks in advance for your help.

Did you properly change the NS records? They're still pointing to the AlterVista nameservers.