Your invoice will update automatically if you receive a credit card payment on a Bloom invoice. However, if you've received payment outside of Bloom, your invoice will not get updated, and you need to record a payment on that invoice.
To do this, you'll need to open the project. Go to your projects tab, find the project that contains your invoice, and open it.
In your project, you'll see a list of your invoices. Click on the invoice itself, and not on the 3 dots.
After opening an invoice, click on the button that says "+ Record a Payment".
Next, enter payment details. Add the amount, the date, and the payment method you have received.
If you want to mark the invoice as paid, enter an amount that is equal to the total invoice balance.