I have a NAS which has computer name, eg myNAS , previously I'm able to login to the NAS by typing http://myNAS/ which will bring me to the nas website.

recently something strange happened, when I type http://myNAS/ in the browser, it brings me to some webpage with advertisement like traveloka and said the http://myNAS/ is an invalid address

now i need to type the ip address of the nas like 192.168.0.5 to access the website. what could be the problem , or is this because of the DNS of unifi ? anyone experience this before?