So, two weeks ago tomorrow (Sunday 1/20), I brewed this brown ale kit that came in a package with some equipment ... It came with a dry yeast, which I re-hydrated per directions. On the Tuesday after that, I had to go out of town. Monday and that morning, I did see the airlock activated, but it looked slow. I returned Wednesday night and there was zero activity. .. so, that's were I probably made a mistake, should have got it to a warmer place (Northern Michigan and we had extreme cold during that time) ... but I left it be, figuring maybe I just missed seeing it happen. So, today, I moved the beer from the bucket to the carboy; checked gravity; 1.023, recipe said it should have been 1.015... Need I be concerned that it actually did not finish? If it didn't finish, is it too late to take action? What will be the effect on the final product if it didn't finish and just go ahead and bottle it two weeks from now?