Log on to QTS.
"Go to Control Panel > Security > Certificate & Private Key and then click Download certificate.
The download message appears.
Certificate and Private Key are selected by default. Click OK.
Locate the downloaded file and then extract the contents of the compressed folder. Double-click SSLcertificate.crt.
A plus icon beside the QNAP NAS certificate indicates that the certificate is trusted.
A red error icon beside the QNAP NAS certificate indicates that the certificate is not trusted. To fix this, double-click QNAP NAS.
The QNAP NAS certificate information appears.
Select Always Trust for When using this certificate.
The QNAP NAS certificate is trusted and Container Station displays correctly.