no-ip DDNS period

Hi there,
I set the "DDNS period" in my LNS2 to 20. Nevertheless I get mails from no-ip that my account will expire, because no update within 30 days. What is the unit of "DDNS period"? I was assuming it is days.
Date of last update on the no-ip website matches with the date in the "DDNS status" field on the web-interface of my LNS2 and are indeed more that 30 days ago.
When I change the "DDNS period" field and hit the accept button, the "DDNS status" field shows today's date, but the last update field on the no-ip site is unchanged.
When I enter a wrong no-ip pasword, the error message says "no connection to server". I did not get any error messages in the steps above, so I assume it's not an account or pasword issue.
Any help?
Thx,
Stereomic
I set the "DDNS period" in my LNS2 to 20. Nevertheless I get mails from no-ip that my account will expire, because no update within 30 days. What is the unit of "DDNS period"? I was assuming it is days.
Date of last update on the no-ip website matches with the date in the "DDNS status" field on the web-interface of my LNS2 and are indeed more that 30 days ago.
When I change the "DDNS period" field and hit the accept button, the "DDNS status" field shows today's date, but the last update field on the no-ip site is unchanged.
When I enter a wrong no-ip pasword, the error message says "no connection to server". I did not get any error messages in the steps above, so I assume it's not an account or pasword issue.
Any help?
Thx,
Stereomic