My Gekkoscience Newpac USB miner is giving me an error like "GSH 0 failure".
This has only happened since I updated to the latest cgminer source code from github.
I was told by a pool owner Kano insisted that I need to upgrade to this new code if I want to continue mining using his pool.
Keep in mind I'm not overclocking. In fact, because the room temperature is 80 F I'm actually underclocking.
I was initially underclocking to 50 MHz, which caused frequent errors and "zombie" status.
That's weird because the latest cgminer is promoted as fixing zombie status.
Then I tried underclocking to 80 MHz, which is more stable. But I still get the occasional overheating without zombie status.
Can someone let me know how to fix this?

UPDATE

It turns out that although cgminer 4.11 was working fine for 1.5 years, it suddenly stopped being able to talk to the Kano server, without warning or explanation.
Per Kano's suggestion I upgraded to 4.12 and now it works again, although initially in verbose mode it was spewing "above target" errors. After disabling verbose mode, it mines just fine.

Yes, I must admit, my personal website gets a ton of visits from hackers looking for wordpress vulns
originating from Digital Ocean, AWS, etc. But the worst offenders are overseas in my experience.

Yes, I'm mining. OK it turns out that adding the .0 onto the end of the BTC address broke the web interface.
Now it works, although the hash rate is a fraction of what cgminer reports.

I'm also trying to learn why Kano.is suddenly stopped working for me. There's no contact info on that website.

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??

When I go to the website solo.ckpool.org, and I try to look up my mining history by entering my BTC address to https://solo.ckpool.org/users
I get a page not found error.

Is ckpool.org really operational?

I was directed to use Kano.is because it was allegedly reliable and run by the same person
who runs ckpool.
I've been mining with Kano.is for a couple years with a small ASIC miner. Other people
are using smaller miners.
Suddenly I found that cgminer could no longer log into Kano.is for pooled mining and
complained of an authentication error.
However ckpool still works for solo mining although now I'm not sure I trust it.
Has anyone else experienced any problems with Kano.is?