1. There's a configuration file, and it's incredibly well-documented. You can simply reference the default config, read the manpages, or read the available documentation for help. See:

https://sw.kovidgoyal.net/kitty

2. There is a resize option for text. Hell, in my experience, Kitty seems to have the most powerful font management of any terminal. See:

https://sw.kovidgoyal.net/kitty/conf.html#conf-kitty-fonts

3. That's because the machine you're SSHing into doesn't have Kitty's terminfo files. That's easily fixed by running "kitty +kitten ssh myserver" where "myserver" is the IP/domain of your server. See:

https://sw.kovidgoyal.net/kitty/faq.html#i-get-errors-about-...

Is this bait?