Upload your chapter to a sharing website like mediafire or Mega and then open the manga you want to add the chapter to and click on the little flag on the left side of the screen and send them the download link. That is how I have done it :)
Contact mangago
It's a new manga though, I would be adding the first chapter
Any manga page is also fine for new manga.
please delete this comment. my bad, sorry
Today is 29 Jul, can you tell me how you find this 15 Feb request?
Moreover you just create account today.
Does anyone know how to upload a manga on here? I have one that I kinda want to share but I don't know how to upload... help, it's BL (=・ω・=)