cannot send CPM data using wget

My system stopped sendig data to radmon.org a few days ago, It was using wget to send data:
/usr/bin/wget -O /dev/null "http://radmon.org/radmon.php?function=submit&user=pilovis2&password=zzzzz&value=xx"

I double checked my system and everything works well, did you change anything on your side?

Thanks.

P.S.: I'm now using curl but not sure it is the right method:

/usr/bin/curl -s "http://radmon.org/radmon.php?function=submit&user=pilovis2&password=zzzzz&value=xx"