I only seem to be able to view 4 products in the list when I go to create an invoice
The invoice options exclusively display one-time payment products. Therefore, if the other products in your inventory involve recurring payments, they won't be visible or selectable within the invoice builder. This distinction ensures that only the appropriate products, which require one-time payments, are presented for inclusion in the invoice, simplifying the billing process for your clients and maintaining clarity in the billing documentation.
