Hello S Hartland,

I appreciate you for getting back to us here in the Community. Allow me to step in and provide additional information about the issue going on in your end.

I've checked here, and we've received reports from other users concerning the invoice custom form styles. Our product engineers are already working to fix the issue as quickly as possible.

If this happens when you go to Print Preview, please continue to email the invoice to your customers. Once sent, they will be able to see the correct form style via Email.

I also recommend reaching out to our Support Specialist. I want to make sure you'll be on the list of affected users for you to receive updates about the fix.

You can provide the investigation number INV-27893 directly to support.

Please let me know if you have any further concerns about invoicing customers. I'm always here to help.