Most probably, they suspended your account because it had many shared links (often several daily) and almost zero other activity. From here:

If you submit mostly your own links and your presence on reddit is mostly for your self-promotion of your brand, page, blog, app, or business, you are more likely to be a spammer than you think!

So: comment, re-post, and post something without links (your mobile pix, for example). It actually doubles the work. :( I myself follow this strategy but not that actively - often too tired of computer work to even upload something to Reddit.

So... the best way is to shift from quantity to quality to a certain extent, to find a balance between the two.

For the future would you say the next best step to take is to make a new reddit acc (if I do not get my old one back) and link that one to my hive (is it possible)?

If you are busy anyway, don't remove your current Reddit account from hiveposh.com to be sure to get all the rewards for your previous activity. I don't know for sure (I am not the dev who created the program) but logic says that if you unlink your current account, you might lose the unpaid rewards made with the current account. Wait a week from your last Reddit activity of yours and then link a new Reddit account.