Yes, you can cancel it, if you have not yet purchased it. Just follow the steps in the following FAQ, and it will remove the MAX package for you.
If you changed your mind about MAX, you can remove it as long as you haven't already paid for it.
Here's how to do it:
So if you have already purchased it, will it charge me extra “every” year when I file my taxes, or was it just a one time charge?
What if I already paid for it? I just want to finish filing my tax.
I don't care if I have to lose $50 paid, but refuse to give all the personal info
requested vy MAX. Pls reply ASAP as I wan to file my taxes, which just needs to
be filed with IRS and the state. Thank you !