there script sh <(curl -sSf https://downloads.nordcdn.com/apps/linux/install.sh) wont run on DNF5 and cant use it on atomics since rpm-ostree dont have run script installation
they removed all .deb and .rpm downloads from nordaccount
what i do now is making repo
sudo tee /etc/yum.repos.d/nordvpn.repo << "EOF" > /dev/null
[nordvpn]
name=NordVPN
baseurl=https://repo.nordvpn.com/yum/nordvpn/centos/${basearch}/
gpgkey=https://repo.nordvpn.com/gpg/nordvpn_public.asc
gpgcheck=1
EOF
anything else you need let me know i try to provide all