Suddenly I found that cgminer could no longer log into Kano.is for pooled mining and
complained of an "authorisation" error.
First, Post in the Kano.is pool thread.
https://bitcointalk.org/index.php?topic=789369.msg8895603#msg8895603Second, get on Kano's Discord Channel.
Third, Kano is very proactive on banning IP ranges that may be doing something malicious. This is a good thing! But of course legit users sometimes fall in that IP range. So contact Kano, correctly, and he can whitelist your IP, if that is the issue.
The Kano thread says :
"Warning: this topic has not been posted in for at least 120 days.
Unless you're sure you want to reply, please consider starting a new topic. "
The discord channel requires providing a phone number. That seems sketchy. I already get enough scam calls.
Banning IP ranges from the USA is also sketchy. Maybe banning ranges from Nigeria, or Khazakstan, makes sense. But the USA??