I have been attempting to change my name servers to:
ns1.linuxserver29.com: 67.15.230.108
ns2.linuxserver29.com: 67.15.230.109

however, I keep recieving the message :"ERROR: Errors modifying nameservers: Updating nameservers failed. Please try again.421."

I am copying exactly what the email said. I was able to change them to only:
ns1.linuxserver29.com
ns2.linuxserver29.com
but I cannot enter the IP address after that. Am I doing something wrong? Please help!!