Your entry was not disqualified.
Although you did mention, that you used time stretching to "align" all tracks - which wasn't necessary (there are DAW's that do not consolidate from bar 1 to the final bar marker you've selected, but rather to the last audio event only). I triple check this even with every Multi-Track Mix Package. This was the only comment to your entry on the Statistic Sheet.
However, as the nature of this scenario goes, the "client" did not select your entry for Mix Round 2.
Want to know more what the Statistic Sheet is actually telling you, there is an extensive article in the Rule Book section:
Mix Challenge - Addendum: Statistic Sheet and Wild Card Mechanic