I cannot view quotations when clicking the "display" button in the admin panel

First distinguish a download that never starts from a downloaded PDF that is blank.

1. Sign in to the back office again, reload the quotation list and retry View. Avoid an old bookmark or copied link containing an expired session token.
2. Check whether the browser blocks a new window or download and record the exact message or network status.
3. If the request fails, ask your developer to examine the error and logs. Check the domain, HTTPS protocol and redirects if the request reveals an inconsistency.

Do not change shop URLs to apply an old workaround without identifying the cause. If a blank file or PDF error is returned, follow blank-PDF troubleshooting; for an image error, see TCPDF troubleshooting.