i cant install the panel by this link on installation part
https://www.aapanel.com/script/install-ubuntu_6.0_en.sh
and try to ping yoir server online by multihost pinger see this report
https://check-host.net/check-tcp?host=brandnew.aapanel.com&csrf_token=41589df3cdce80051fc8ce940577f10b05b12488
do you have problem in your servers/host ?