Instagram and Facebook photos not loading while on Xfinity

Over the past month or so myself, along with my neighbors, and other area friends have been having an issue that while on Xfinity wifi our instagram and facebook photos are not loading. They look like broken links or grey squares depending on the device being used. This happens to me on my computer using a Chrome browser and and Edge browser. It also happens to me when on my iphone when using my xfinity wifi. Guess when it doesn't happen....when I'm using the data plan of my phone. The only time that I can see what my friends are posting online is when I get off the wifi and just use my phone's data. 

  It's very frustrating and it's definitely not just me. Upon googling this issue, I've seen that many people in Virginia have been experiencing this issue. I use my social media to share my business information and happenings and I can't see when customers are writing me or sending me photos of the work they need done. It is getting very annoying. 

  It took an absurd amount of time to get through to an actual person at xfinity, but as you can guess, they were no help. She wanted to restart my router...cool cool cool... yes, that does not help, friend. She finally submitted a report so we'll see if anything actually happens. Anyone else having this problem?