First balance TA, then PH, then hardness.
I also use ColorQ and have had problems with TA reagent going bad. I suggest validating the reading with another source. Make sure your test tub is dry and droplet's are good size.
I suggest to refill and don't add more chemicals than needed.
Lastly it's a new tub, so use Ahh-some to help clean some of the factory junk out.
Agree with balancing the TA, then PH. Our TA was higher than that to start - don't remember the exact number. Our dealer recommended muraic acid. Using goggles, appropriate gloves, and a glass measuring cup, i believe i added 1/4 cup at a time, waiting 4 hours , measuring levels, then adding again, if needed. Took 2 cups total to get it w/in range, but it did work. I know many do not recommend, but i'm the only one who manages the chems in the hot tub, and I'm comfortable with it. If you go down this path, do not mix water into the acid. Apparently that can cause a violent reaction. I'm not a chemist, so don't understand the reasons why; but if you pour the acid into water - no problem; pouring water into the acid = no good.
Good luck