Why assume you did anything wrong? At this point no one has rejected your sites, it's just that no-one has reviewed it and accepted it. It's just that you have an expectation that a year and half is too long.
You might note
How long until my site will be reviewed? which would give you a more realistic point of view.
I understand that it's frustrating waiting when you don't know how long and have a false expectation, I waited to pick up window blinds today, and it was indicated to me there was one person ahead of me, after waiting half an hour with 4 people served ahead of me I gave up and walked out.
But with ODP, there is no line up, there is no indication how many people are ahead of you, because it does not work on that concept. People make suggestions of sites,
which may be processed in any order, and that could be 10 minutes from now, or never.
There could be many reaons why your site was not reviewed and published yet.
An editor could have looked at it, and found it had some minor problem, but he decided not to reject it, but also not to publish it at this time. Sometimes sites are not so easy to review, they may have content that crosses categories.
There could be 2000 other sites waiting to be reviewed, and the editor has not got to it yet.
There could be no other sites waiting to be reviewed, but no editor is interested in reviewing Outdoor Clothing sites.