Attributes Terms Disappearing

2 days ago I had all the products running with attributes fine however now all of a sudden they have all disappeared. I can add an attribute but then when I add a term and refresh it(the term) will disappear. Has any experienced this or what maybe causing it?

Screenshot: https://backtoblue.com/error-attributes.PNG

System Report:

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### WordPress Environment ###

Home URL: https://backtoblue.com
Site URL: https://backtoblue.com
WC Version: 2.6.9
Log Directory Writable: ?
WP Version: 4.7
WP Multisite: –
WP Memory Limit: 256 MB
WP Debug Mode: –
WP Cron: ?
Language: en_US

### Server Environment ###

Server Info: Apache
PHP Version: 5.6.26
PHP Post Max Size: 8 MB
PHP Time Limit: 0
PHP Max Input Vars: 1000
cURL Version: 7.29.0
NSS/3.19.1 Basic ECC

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Remote Post: ?
Remote Get: ?

### Database ###

WC Database Version: 2.6.9
:
woocommerce_sessions: ?
woocommerce_api_keys: ?
woocommerce_attribute_taxonomies: ?
woocommerce_downloadable_product_permissions: ?
woocommerce_order_items: ?
woocommerce_order_itemmeta: ?
woocommerce_tax_rates: ?
woocommerce_tax_rate_locations: ?
woocommerce_shipping_zones: ?
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woocommerce_payment_tokens: ?
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MaxMind GeoIP Database: ?

### Active Plugins (22) ###

Advanced Custom Fields: Repeater Field: by Elliot Condon – 1.1.1
Advanced Custom Fields – Location Field add-on: by Julien Bechade – 1.0
Advanced Custom Fields: by Elliot Condon – 4.4.10
Automatic YouTube Video Posts: by Ternstyle LLC – 5.1.4
BackWPup: by Inpsyde GmbH – 3.3.4
Contact Form 7: by Takayuki Miyoshi – 4.5.1
Custom Facebook Feed: by Smash Balloon – 2.4.5
Envato WordPress Toolkit: by Envato – 1.7.3
Google Typography: by Eric Alli – 1.1
Header Footer Code Manager: by 99robots – 1.0.2
WPBakery Visual Composer: by Michael M – WPBakery.com – 4.11.2
Revolution Slider: by ThemePunch – 4.6.93
UPS (BASIC) WooCommerce Shipping: by WooForce – 1.1.8
WooCommerce: by WooThemes – 2.6.9
WordPress Importer: by wordpressdotorg – 0.6.3
WP Hummingbird: by WPMU DEV – 1.3.4.1
WP Smush Pro: by WPMU DEV – 2.4.5
WP Super Cache: by Automattic – 1.4.8
WPMU DEV Dashboard: by WPMU DEV – 4.2.1
YITH WooCommerce Wishlist: by YITHEMES – 2.0.16
YITH WooCommerce Zoom Magnifier: by YITHEMES – 1.2.22
Youtube Channel Gallery: by Javier Gómez Pose – 2.4

### Settings ###

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

### API ###

API Enabled: ?

### WC Pages ###

Shop Base: #1569 – /shop/
Cart: #1570 – /cart/
Checkout: #1788 – /checkout/
My Account: #1790 – /my-account/

### Taxonomies ###

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

### Theme ###

Name: Oxygen
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