I used to get email confirmation through my email when a customer paid their invoice . now i am not receiving them anymore ?

It's good to see you here in the Community space, craig.

The possible reason why you didn't receive some emails when your customer paid their invoices is maybe your email is not updated. I'm here to help you on how to fix this matter.

First off, we can perform some troubleshooting steps. Here's how:

Step 1: Check your email folders.

1. Open your email and check your Spam or Junk folder.
2. If it's there, move the email to your Inbox, if not, we can proceed to step 2.

Step 2: Add QuickBooks Payment to your contacts

You can check this guide for more detailed steps: Unable to receive Intuit email from QuickBooks Payments.

If ever the issue persists, we can double-check your merchant service account to see if your email is correct. Here's how:

1. Sign in to your QuickBooks Payment account.
2. Select Account, then Account Profile.
3. Go to Account Holder/Business Information.
4. If you want to update your business information, you can click Edit.
5. Change your business info as you need to, then select Submit.

Afterward, if the information is correct, I recommend contacting the customer support team to help you check your account and further investigate the cause of this problem.

Additionally, ensure that your company setting in QuickBooks Online is up to date with the customer-facing and company email.

If you have any further concerns about receiving emails when your customer paid their invoices, please don't hesitate to share them with the community. We are eager to help you. Stay safe!