@AChan123 If I'm understanding correctly, it sounds like you're using a Free For Teachers (FFT) account, and if that's the case, it is not possible to integrate third-party tools into a free course; these require administrative capability that is not available to FFT users. You can read more about what features are available to FFT users in the Canvas Account Comparisons PDF .
You are correct. I am asking how I can get a pay account when I am not associated with a school. Does anyone know whom I should contact at Canvas? Thanks.