Please stop this nonsense talk, you are not helping OP.I wouldnt buy links from the marketplace tbh. tried it, and the results are much better with links from proper sites which have actual traffic. The risk of getting penalized is also much less with good links. A site which is only there to build links will lose its power quick, especially when so many links are sold every day
The 600 links are probably from a negative seo attack, make sure you add them to your disavow file.
Please stop this nonsense talk, you are not helping OP.
Nobody will bother to negative attack a new site, what is the point of doing it?
The marketplace is good, your decision of buying shitty services is bad.