Not able to upgrade to prepswift

When I tick the two check boxes and click on upgrade to prepswift, website says “Something went wrong. Try again later.”. Also I will only need to pay the 1.99 usd extra amount right as I already have gregmat+?

Please help me get access to prepswift.

Contact the PrepSwift customer service representatives.

For your second question, see Upgrading, downgrading or cancelling PrepSwift | PrepSwift Helpdesk