Generally,Copy-pasted contents,aff links,Sites with harsh ads are not welcome in Reddit.In case your link contain one of these factors,you should try promoting your link in an indirect way not stay under radar.Direct advertising can be risky for your account and for you domain.
For some reason I got shut down really fast on Reddit. I tried to follow a guide I found on Warrior to not get banned but alas, I still was banned. People flagged me to quick I think. I think Niche had something to do with it though.