Hi there! I understand you're having trouble updating your payment details and your account isn't showing your filter subscription. Let's get this sorted out together.

First, just to clarify: Are you trying to update your payment info via the Blueair app or the website? Also, have you logged into your Blueair account directly on the website to check if your subscription details show up there?

Meanwhile, here’s a straightforward step-by-step to try:

1. Log in on the Blueair website: Go to blueair.com and log into your account — sometimes the app can lag behind the website in showing subscriptions.

2. Check your subscription status: Once logged in, select "My Profile" from the left menu, then scroll down to look for your filter subscription. Confirm if it shows up here.

3. Update payment method: In the same profile area, scroll to "Payment Method" and select the option to update your credit card or payment details.

4. Confirm subscription is active: Make sure your subscription status indicates it’s active and check the next scheduled shipment date.

If you find that your subscription is missing entirely from your account on the website as well, it might be an account sync or registration issue. In that case:

- Try logging out and back in on the app and website.

- Make sure you are using the same email address and credentials across both.

- If you’ve tried this and your subscription still doesn’t appear, there might be a deeper issue with your account.

Would you like me to guide you through these steps, or have you already attempted some of them? If needed, I can also help you reach out to Blueair customer care directly.

Let me know how you’d like to proceed!