So, people have asked if I did things that are quite obvious to do, so let me run over this again.
I download the add-on as a zip file, put it into Add-ons folder, run Blockland, go into Custom gamemode, and I scroll down. I cannot see the them. I have read the walkthroughs over and over and OVER, but they are not helping. So can anyone help with that? I am not asking "how 2 install addons".