You have to contact the webmaster go the bottom and click contact it won't take you to any page but it will show an email address at the left hard corner email them your translations and the title and a small description of it. Then it takes 7-9 hours for it to be uploaded to mangago if the webmaster uploads it. If they ignore then send again and again.
On the left margin of any manga's main page, click the flag and submit your work by linking the manga you've uploaded (in mega share or any other site you're using) and state that it's a new release translation. Hope that helps :)
I´m really thankful for your replys and I´m probably gonna use it ヾ(❀╹◡╹)ﾉ~
how do I upload my own translations ? It´s just for the future ^^