There is a button that says “upload chapter” right above the actual chapters I think you press that and go from there but like. Idk I’ve never uploaded
https://www.mangago.zone/home/album/352284/
Try doing this. For me it actually helped but I've seen some people have trouble with it. I don't remember how long the approval time is they don't send you a message saying they upload it, you gotta be on the look to see if they upload it (just be checking the "new manga" button). I also saw someone comment that if you can't upload it on here try uploading it on another site and the bots automatically upload it here.
I want to try uploading a chapter of a manga that hasn't appear here yet, but I can't find the option anywhere, does anyone know how??