Phishing email? Or actually charging for Smule?

I received an email with this subject

"Subscription Billing : 【Payment Order 】 Subscriptions happens on Your Account to App 【Purchase Status 】 New Transaction has been made on : [Monday , April 20 2020 Certificate PDF] EST"

I feel this may be a spam/phishing email, but it's the second time I've gotten it. I check all of my accounts and had my spouse do the same. We haven't seen this charge, but are still concerned. They didn't ask for any info. Looks just like a bill, but neither o us show this in our subscriptions and we don't have the app.

Any idea what this is?