Hey,

after updating Wordpress to version 4.6 all my Instagram plugins stopped working. I figured out that they get a bad request (400) so they can't load any images. Then I also found this error message on my server:

https://dl.dropboxusercontent.com/u/21665667/error.png

Everything is working fine on WordPress 4.5 and strangely it's also working locally on WordPress 4.6. I get this error only on my server.

Cheers
Bahemian