I dont think anything is wrong. You're using a bucket, which don't usually seal completely, so you may not see airlock activity. Lack of airlock activity does not necessarily equal lack of fermentation. Your 62F temp was fine, 67 is a little high but fine for the yeast. Most importantly, if the yeast is floating on top, then that's probably the krausen and it is fermenting. Take a gravity reading, if it's dropped from your OG, then sit back and let it work, and RDWHAHB...