i change my domain..how to restore my site

Hi,
i changed my domain name channelslk.com to channelslk.info
i have uploaded everything inFTP and imported the mysql databases
but site does not work !

i tried to fix the issue with the help of this
https://codex.www.ads-software.com/Changing_The_Site_URL (under the heading Domain Name Change )
but it didn’t work ??

can anyone help me with this
thanks in advance !