When viewing a Failed payment on an Invoice, you may see the error message that says "Expired API Key provided: sk_live_******. Platform access may have been revoked."
This means that there was an error in the connection between Brandboom and Stripe.
You can either try running the payment again or going to your Settings page to re-connect your Stripe account.
Navigate to your Settings page from the Account menu.
Locate the box next to Stripe Connect Key. Click on this box to view your connected Stripe account and see if there are any issues.
If not, click on the x next to this box to "disconnect" your Stripe account. Then click on the Setup Stripe button to log back in and "re-connect" to Stripe.