I haven't tried to post links on Reddit, but from what I've seen by being on the site for a while-- the more you comment, post links, etc. the more you'll be viewed as a contributing member and the more leeway you will attain. Let's say you're posting 50 comments with just your link and no other comments. It's inevitable that you'll be ghosted. But if you're posting 100 comments, 50 with your link and the other 50 just random contribution, you'll be less likely to be seen as spam. I could be completely wrong, though, so take this with a grain of salt.
Just from knowing the community, though, the more you contribute and the more that people can see that, the more likely they'll be to check out your website and the likes. Build up a nice reputation and I'm sure it'll pay off.
Good luck and sorry I don't have any information about the IP ghosting. Have you tried a proxy or manually changing your IP address? I don't know if it'll work, but you could keep switching between IP addresses while you're posting and maybe not have to worry about contributing?