Yes, I have an account, where I put USERNAME is where I inserted my username. I'm going to move this question to Discord. Makes a little more sense to ask there. Thanks though.
Did you first create an account on the kano.is site? Iirc you have to do that first then use that username.
In this part - replace username with kano as shown below
stratum+tcp://stratum.kano.is:3333
The post from steamtyme should fix it, in your first post you posted the url for the pool as "stratum.USERNAME.is:3333 it is in fact stratum.kano.is:3333