Settings > Workspace > Billing and click on the Manage subscription and invoices (1) button or the "Manage my plan" (2) button.
Under Billing History click the purchase you'd like to view the Invoice/Receipt for
You can then click on the Download invoice or Download receipt buttons to download the necessary document(s).
Need any help with this? Reach out via [email protected] or through the chat widget on the bottom right corner.