How do I change the message to customer on invoices I want to put my bank details in it?

Hello usergvclean,  Thanks for your question. To change the message to customers, if you go to the settings cog in the top right>custom form styles>clcik edit on the standard default template>click on content>click on the bottom 3rd of the preview template>you will see the message to customer box you can use that or you can use the footer box to add bank details.