Were you able to resolve the issues with this addon? The icons are pointing to images that don’t exist in the Senaite V2.5 codebase.
I made modifications in Batch.xml, Client.xml and the listing views which fixed the icons.
Also, to invoice per batch, you have to navigate to the Client, select Batches and invoice from there. Then I realized that you have to “Email” the invoice in order for the batch to move from “To be invoiced” to “Invoiced” in the filtered listing views.