F lines not working

Hi,

I created a couple of F: lines for sharing which using the cline checker on the web seemed to be working fine.
However, after a day they both appeared not to be working.
I created a few more lines to check if there was an issue and found one or two of the newly created lines were working but most not.
This is despite all the lines being basic user password Flines.

Does anyone have any ideas why this might be happening?
Thanks in advance.

I have a no-ip account.
The strange thing is I can have 2 Flines in cccam.cfg where one works but not the other.

Same user but different password.
I'll try again tonight and see if using different user and password does the trick.
Thanks

- - - Updated - - -

I used different user names and things seem to be working.
Lesson from this is not to trust those online checkers.
Thanks again.