Error message with Networks

I keep getting an error message when trying to add urls for Instagram and google +
(below)
My url for instagram is: https://instagram.com/simplifyyou
for Google+: https://plus.google.com/u/1/114713066331096777371
These urls are CORRECT

The Error Message is:

ot Acceptable
An appropriate representation of the requested resource /Wordpress/wp-admin/options-general.php could not be found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Please help!

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