Will this Zerotier Update?

Using Linux machines and VMs with (X)Ubuntu 22.04

Installed Zerotier with

curl -s 'https://raw.githubusercontent.com/zerotier/ZeroTierOne/main/doc/contact%40zerotier.com.gpg' | gpg --import && \  
if z=$(curl -s 'https://install.zerotier.com/' | gpg); then echo "$z" | sudo bash; fi

/etc/apt/sources.list.d/zerotier.lst was created
No entry was created in /etc/apt/trusted.gpg.d/
but a gpg entry was created in /home/…/gnupg

However, two issues:
1 while apt is aware the package is installed,
zerotier doesn’t appear in the list of repositories.

2 sudo zerotier-cli info -j shows
“softwareUpdate”: “disable”,
“softwareUpdateChannel”: “release”,

This makes me wonder:
Will this update?

Also, a 2nd question:
etc/apt/sources.list.d/zerotier.lst looks like:
deb [signed-by=/usr/share/keyrings/zerotier-debian-package-key.gpg] http://download.zerotier.com/debian/jammy jammy main
Why is it http - can I replace the http with https???