I'm missing most of avatar-images on the forums. I can see my own and basic Ouroboros, but most avatars appear as missing images. This is my forum view


(sorry for taking a screenshot of someone's post)
I've checked by browser settings to always allow images. It might be my virus software too. But weird thign is: when I try to open some missing avatar image to a new window, I get the error message saying us.v-cdn.net is sending false answer (ERR_SSL_PROTOCOL_ERROR). But when I change the address of the image from https to http, I can view the image.
Anyone else having the same problem?
Does this sound like virus software/ firewall issue?
The problem occured before forum theme change. But now I start to miss avatar images, those broken image boxes are ugly.