upgrading account plan on student account

I have a personal paid account using student discount and I need to upgrade to a basic commerce plan. Is there a way of keeping the student discount on the upgraded account? When I try to upgrade, it's asking for an extra 180gbp when it should be 120 gbp or less

You should contact Squarespace Customer Care for this.

https://support.squarespace.com/hc/requests/new#choose-topic

cheers