Can't find the 1.12.2 version of this mod anymore, it's no longer on the website. Only the 1.16.5 and 1.17 versions are on the website now. What should I do in order to get access to that version of the mod?

I found the correct version after I clicked the button that I mistook for the 1.16.5 download button. For anyone searching for 1.12.2 lucky block version, click the 1.16.5 download button on the lucky block website, and it will take you to a page where you can download all of the previous versions.