We need to have the WHMCS default invoice customized to our needs.
This has to be done in TCPDF (just by altering the WHMCS default template).
Attached are the old_invoice (Default WHMCS invoice template) and the new_invoice pdf files.
The new invoice pdf is what the invoice should look like.
I just added the invoicepdf.tpl file.
This is the default WHMCS invoice template.
This is what needs to be adjusted to fit the New_invoice.pdf