Dynv6.sh - 404 Not Found

Hello Community,
I am trying to run the dynv6 script and I get following error message.

sudo token=rsexxxxxxxxxxxxxxxxxxxxxx ./dynv6.sh da-banana-pi.dynv6.net
curl: (22) The requested URL returned error: 404 Not Found

Does anybody please have a idea what the reason for this error this ?

Thx, Whohasmorebandwith