thanks for the reply. I tried it in HomeScene.brs which is my main scene.
I simply did what you asked in the init function:
sub init()
m.top.SetCertificatesFile("common:/certs/ca-bundle.crt")
m.top.InitClientCertificates()
I'm still not getting thumbnails for the most of time. Like I mentioned before, there are rare times when I relaunch the app and somehow https images started showing, and the next time they don't anymore... All these images I've verified to be working on a desktop browser.
I wonder if this inconsistency is related to developer mode?