This site uses some feature to host photos. In my case I think McAfee was blocking photos with that associated url. Everything else worked fine. Once McAfee recognized these url's as safe, the problem stopped.
Our "add image to post" uses this site to store the photo
https://ibb.co Our library photos reside here
https://i708.photobucket.comThere are other photos that members added before our add image mod was added, these images are residing on many different sites depending on where the member decided to store them.
Not sure but it could very well be that viruses protection has bee tightened up on the many different web browsers and virus protection software i.e Norton, McAfee etc. More than likely due to an increase of hacking, malware etc.
You may want to add these sites to your firewall, anti virus programs and web browsers.
I have checked all of our SSL certificates, all are current and up to date. I have tested our site and it is safe and loading properly. I also had our host technicians verify the site is safe, properly loading , SSL certificates are valid and up to date.
Dennis