Hi,
The SSL certificate shows the correct root and intermediate certificates are installed on the web server, however I believe the issue is related to secure and non secure images on the web page. Please refer to the following article which explains this type of issue
https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=400If there seems to be further issue related this problem please submit a support ticket via
https://support.comodo.com with the order details so our team can further look into this issue for you.