If you want to upload a game bigger than 1GB (or 2GB for butler) then you need to contact support.
Although it might be off topic, do you have permission from the developers or a license to distribute the game? If not, they can possibly take down your page, and depending on the details even take legal action.
I checked the link of the post you mentioned, I could be wrong, I think you are right.
It does mention butler can go up to 32GB so you must be right. I’m not sure why I remembered there was a limit of 1GB on the web and 2GB on butler. I’ll check it again on the official documentation when I have the time to confirm.
I know that if you need any extra space, the best thing to do is to contact the support.
