Hi. I played through a few levels and felt the game was really well polished. I am not bothered that it technically was started outside the jam period since you were honest about it and are opting out of prizes.
As a side note, did you know that there are actually many jams specifically for finishing "old" projects and/or getting feedback on already published games? I have a lot of old unfinished games too, so I tend to be on the lookout for them. The bimonthly jam "Improve Your Game" and "Feedback Fest/Quest" are some of the most notable and have voting segments, which I find gives games much more views and feedback than unvoted jams. Unfortunately, they both just finished, so it will be a couple months before they run again.
Some currently running "old" project jams are the year long jam Finishit23 and a slightly different jam called Indiepocalypse, which is looking for games to include in a paying anthology and does accept "old" and already published games. Jam ends in a day, but runs every month or so.