Can't post – Instagram Review

I now cannot post anything on my instagram. I've updated the app and it went from "failed" to "preparing". Doesn't do anything else and it just stalls. I have really good internet connection so it can't be my internet as well since I get 700-800Mbps download and 35-37Mbps upload. Restarted the router as well and still can't post. The hell is going on?
Review by Monkeyboy344253 on Instagram.