Hello @DiaCap64,
Welcome to the PayPal Community Forum. Often times when changes are made to a PayPal account or a billing agreement on a PayPal account, an email is issued out to the account holder's email address on file. In situations where you're unsure of whether an email was from PayPal or not, you can forward it to Spoof@PayPal.com to have the PayPal fraud team look over it and confirm whether it was from PayPal or not.
This PayPal Help Center articles goes over some information on how to spot fake emails: How do I spot and report a fake, fraudulent, or phishing PayPal email or website?
I hope this information helps you get clarification on the email you received.
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