https://enteraddon.com/wcone/upload-invoice-logo-and-header-footer-text/
Upload invoice logo and header, footer text – wcOne
footer textuploadinvoicelogoheader
https://wpastra.com/docs/footer-custom-text-helper-strings/
Astra Helper Strings for Footer Custom Text
In Footer Custom Text, a user can add any HTML content. Furthermore, Astra offers some helper strings that can be used to place some useful dynamic content,
custom textastrahelperstringsfooter