I have a multi-domain SSL and am running multi-store with OpenCart. I recently became aware of the need to transition from SHA-1 SSL security to SHA-2. The firm that issued my certificate kindly made all the changes and I've now confirmed that all 3 of my stores are SHA-2. WooHoo!!!
However, now I've run into a couple of problems. I don't know if there are some config changes that need to be made on my end with OpenCart or if there's some other problem.
1. First weird thing I noticed was when uploading an image(s) for a new listing. The image(s) will upload but you can't see them. However, if I save the listing and then go back in to edit it, POOF, there are the images.

2. Second weird thing. I have Smart Search. Now if I attempt to look at my Smart Search history, Firefox tells me that "This Connection is Untrusted"

I don't know if there might be other problems, but those are the only 2 issues I've encountered so far. And obviously, after the second problem listed above I'm real concerned about the possibility that one of my customers might encounter something similar...
Pleeeeeeeeeeeze!! Can anyone help me? Anyone have any idea what might be going on??? I have virtually zero technical expertise... but I follow directions really well (if they're written for dummies).
Thanks in advance for any help!