I am one of the original $7.99 lifetime subscribers. I received no emails or cancellations. My payment for the month was processed last night. Music apps in the browser and mobile still recognize my account.
Same, mine was charged on the 28th, but I had this exact same problem once before where I was switched off and they cancelled my subscription. I used the Google One support people to get connected to the right tech support people inside of Google and got everything fixed in less than an hour.