I think bubblegum means mangago doesn't want you to know where they stole it from. Yes the translaters bought it and posted on their original site and asked for it not the be posted outside of said site. But I mean here we are on mangago a d not on what ever was crossed out. So yes it was stolen.
The comment from Leta already explained, but I'll clarify it. I meant mangago doesn't want you to know that the translator did not want their chapters to be uploaded outside of "mangad3x.org". Replace "3" with "e" because mangago also deletes comments that mention that site. LOL!
Why do they cross out the original site on the credits?