what do I have to do to download the invoice #12588?
I'm happy to help! I completely understand your confusion about how to download the invoice with the number #{{Invoice Number}}. To download your invoice, please follow these simple steps:

1. Log in to your account on our website.
2. Navigate to the "My Account" section.
3. Look for the "Billing" or "Invoices" tab.
4. Locate the invoice with the number #{{Invoice Number}}.
5. Click on the "Download" button next to the invoice.
6. The invoice will be downloaded to your device as a PDF file.

If you encounter any difficulties or have any further questions, please don't hesitate to let me know. I'm here to assist you every step of the way!