@Dave CCleaner my apologies for tagging you, but just a few moments ago I also received a PayPal invoice with the email showing as "ccleaner.payments.donation@gmail.com". I too have had CCleaner Pro which will expire on 27th January 2022, but I'm pretty certain I cancelled auto-renewal (I'm not sure how to check as I no longer have CCleaner installed).
Would you like me to DM you the email information regarding this PayPal invoice as well?
Kind regards,
Nerph
Edit: Also quite intriguing, the "Note to customer" on the PayPal invoice is in Dutch, my native language.