You need to add, confirm and make primary your new email. Prior to removing the old one.
You may add up to eight email addresses to your PayPal account. Remember that each email address can only be associated to one PayPal account at a time.
If you want to replace your current email address with another one, simply add a new address and remove your old one:
Here's how to update your email address.
Go to your ProfileIcon Settings.
Click + in the Email section.
Type the new email address and click Add Email.
To remove your old email address, simply click Remove next to that email.
Once you add a new email address to your PayPal account, you need to confirm it. Click Update next to the newly added email and then click Confirm this email.
Since editing your primary email address is not an option, here’s how to update your secondary one:
Go to your Profile Icon Settings.
Click Update next to your email address, in the Email section.
Update the email address and click Change Email.
