Same here :( With 11.0 no problem but 11.1 some node won't update, i can do netclient pull, but 5 minutes after same node back in warning, i have uninstall server 2 times, uninstall every node, delete /etc/netmaker, reinstall :( One time i do not set external DNS for network and second time DNS cloudflare 1.1.1.1, it's change nothing :(