Add to cart started to fail 2 weeks ago

Recently we noticed sales decreasing and then after a large time frame of traffic (50k+ daily visits) i noticed no sales. Recently found out that when you click add to cart, nothing happens. No redirection or anything, you click cart and it says its empty. All files are up to date as far as i know.

`
### WordPress Environment ###

Home URL: http://jonnybones.com
Site URL: http://jonnybones.com
WC Version: 2.5.5
Log Directory Writable: ✔
WP Version: 4.5.1
WP Multisite: –
WP Memory Limit: 256 MB
WP Debug Mode: –
Language: en_US

### Server Environment ###

Server Info: Apache
PHP Version: 5.4.42
PHP Post Max Size: 256 MB
PHP Time Limit: 120
PHP Max Input Vars: 1000
SUHOSIN Installed: –
MySQL Version: 5.5.49
Max Upload Size: 256 MB
Default Timezone is UTC: ✔
fsockopen/cURL: ✔
SoapClient: ✔
DOMDocument: ✔
GZip: ✔
Multibyte String: ✔
Remote Post: ✔
Remote Get: ✔

### Database ###

WC Database Version: 2.5.5
:
woocommerce_sessions: ✔
woocommerce_api_keys: ✔
woocommerce_attribute_taxonomies: ✔
woocommerce_termmeta: ✔
woocommerce_downloadable_product_permissions: ✔
woocommerce_order_items: ✔
woocommerce_order_itemmeta: ✔
woocommerce_tax_rates: ✔
woocommerce_tax_rate_locations: ✔

### Active Plugins (16) ###

Ad Inserter: by Spacetime – 1.6.3
Code Snippets: by Shea Bunge – 2.6.1
EWWW Image Optimizer: by Shane Bishop – 2.8.0
Jetpack by WordPress.com: by Automattic – 4.0.2
WPBakery Visual Composer (shared on wplocker.com): by Michael M – WPBakery.com – 4.6.2
Login Logger: by Stephen Merriman – 1.2.1
Mail From: by Andrew Hamilton – 1.0.1
Mailgun: by Mailgun – 1.4
Ninja Forms: by The WP Ninjas – 2.9.45
Per page head: by Erik von Asmuth – 1.3
Optimize Database after Deleting Revisions: by CAGE Web Design | Rolf van Gelder
Eindhoven
The Netherlands – 4.1.5

Widget Shortcode: by Hassan Derakhshandeh – 0.2.5
WooCommerce jQuery Cookie Fix: by Splashing Pixels (Roy Ho) – 1.0
WooCommerce: by WooThemes – 2.5.5
Wordfence Security: by Wordfence – 6.1.5
Yoast SEO: by Team Yoast – 3.2.4

### Settings ###

Force SSL: ✔
Currency: USD ($)
Currency Position: left
Thousand Separator: ,
Decimal Separator: .
Number of Decimals: 2

### API ###

API Enabled: ✔
API Version: 3.1.0

### WC Pages ###

Shop Base: #15321 – /shop/
Cart: #16519 – /cart/
Checkout: #16520 – /checkout/
My Account: #16521 – /my-account/

### Taxonomies ###

Product Types: external (external)
grouped (grouped)
simple (simple)
variable (variable)

### Theme ###

Name: Bones
Version: 7.8
Author URL:
Child Theme: ✕ – If you’re modifying WooCommerce on a parent theme you didn’t build personally
then we recommend using a child theme. See: How to create a child theme

WooCommerce Support: ✔

### Templates ###

Overrides: bridge/woocommerce/cart/cart-empty.php
bridge/woocommerce/cart/cart-shipping.php
bridge/woocommerce/cart/cart-totals.php
bridge/woocommerce/cart/cart.php
bridge/woocommerce/cart/shipping-calculator.php
bridge/woocommerce/checkout/form-coupon.php
bridge/woocommerce/checkout/thankyou.php
bridge/woocommerce/content-product.php
bridge/woocommerce/content-single-product.php
bridge/woocommerce/global/form-login.php
bridge/woocommerce/global/quantity-input.php
bridge/woocommerce/loop/add-to-cart.php
bridge/woocommerce/loop/loop-start.php
bridge/woocommerce/loop/pagination.php
bridge/woocommerce/loop/rating.php
bridge/woocommerce/loop/result-count.php
bridge/woocommerce/loop/sale-flash.php
bridge/woocommerce/myaccount/form-login.php
bridge/woocommerce/myaccount/form-lost-password.php
bridge/woocommerce/myaccount/my-address.php
bridge/woocommerce/myaccount/my-orders.php
bridge/woocommerce/single-product/add-to-cart/external.php
bridge/woocommerce/single-product/add-to-cart/grouped.php
bridge/woocommerce/single-product/add-to-cart/simple.php
bridge/woocommerce/single-product/add-to-cart/variable.php
bridge/woocommerce/single-product/related.php
bridge/woocommerce/single-product/sale-flash.php
bridge/woocommerce/single-product/tabs/additional-information.php
bridge/woocommerce/single-product/tabs/description.php
bridge/woocommerce/single-product/tabs/tabs.php
bridge/woocommerce/single-product/up-sells.php

`

https://wordpress.org/plugins/woocommerce/