You can download the Tax Invoice (GST invoice) from the dashboard. You can go to Profile & Settings/ Payout. You will see a table with all the details such as date of transfer, the amount transferred, Explara commission etc.
Now, to download the invoice and the order details, you can click on the icon under Manage. You will see a dropdown with an option to download the invoice. This way you can download the invoice for each of the transfer you have received.