You know when you get a message about some expiry that you did not ask for and have no relationship with that it will be dodgy. The domain hxxps://whats-ip.com will allow you to "complete your domain name search engine registration" and pay with Paypal. Speculative invoicing at it's best!
More on the scheme here: https://www.ciso.pm/the-domain-registration-renewal-scam/Failure to complete your Domain name search engine registration by the expiration date may result in cancellation of this proposal making it difficult for your customers to locate you on the web.
Do not discard, this notice is not an invoice it is a courtesy reminder to register your domain name search engine registration so your customers can locate you on the web.