Thanks, I don’t want to cancel, what if I want to delay for a month?

Honestly I'm not sure if there's a time limit, but if you'd be on the safe side I'd just activate the upgrade in your account, because picking your instrument pack is a separate step anyway

Heya, I had the same question recently - yes, activation is a separate step to purchase and you can do it later. The T&Cs say:

You have the right to cancel your purchase within a period of 14 working days after purchase under the conditions that you have not activated your new products and that you are an individual citizen, not a company.

This applies being that you can delay activation until you're sure.

Thanks, I don’t want to cancel, what if I want to delay for a month?

This applies being that you can delay activation until you're sure.

I’m not sure what is the extra model I want to activate.

Can I wait before activating the license?