Hello @Dejavu546,
Welcome to the PayPal Community! Thanks for reaching out about this issues, great question. Are these emails payment notifications? If so, that means you're still receiving payments to that first email from your marketplace. If you're selling on eBay, make sure you update your email on your item listings. If you're selling through your own site, make sure to update your PayPal buttons.
Hope that helps!
- Jon K
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