Changing email address automatically reserved by Shopify for Paypal

When I originally signed up for Shopify, I used my personal email address to sign in (I didn’t have a business email account set up at that time, was still in the researching stage). After building the main body of the site and deciding Shopify suited my needs, I then officially registered my business in Australia, consequently creating a new business email account for my new domain, and a new business Paypal account (not associated with my personal Paypal account). It wasn’t until I went into Shopify’s settings to set up payments that I realised an email account for Paypal had been automatically reserved using the original email I signed up with, ie. my personal email address. I’ve since changed my primary email in Shopify to my business email (now used to sign in), but on the Paypal Express Checkout screen it is still showing my personal email and there is no option to edit it. I test-clicked the Deactivate button on this screen and got the message ‘Your account details will be saved and can be reactivated at any time.’ I want to double-check before performing this action as I’ve read conflicting information when searching for troubleshooting of this issue. If I Deactivate, then Reactivate, will it just bring me back to the same place (not allowing me to enter a new address), or will it give me the option to add my business email? Any advice would be greatly appreciated.