Missing WooCommerce product variations caused by theme???

Hi!
On my site, the variations on product pages disappeared after I updated to WordPress 4.3 & WooCommerce 2.4.6.

As you can see when you scroll down to beneath the image, the information (which is entered in the back end & which used to be displayed before the updates) under ‘Description’ & ‘Additional Information’ has disappeared: https://delicate-elegance.com/product/1211-02-boys-four-piece-christening-special-occasion-outfit/

When looking for a solution, I found this post under WooCommerce support: https://www.ads-software.com/support/topic/24-common-issue-variations-missing-on-product-pages?replies=1

In this, it says that this problem is caused by the theme & the theme should be updated. In my WordPress dashboard, I looked under WooCommerce > System Status, and under the info about the theme on my site, it says:

Name: Customizr – Child
Version: 1.0 – 3.4.6 is available

I assumed the problem with WooCommerce is being caused by the fact that the theme is not up-to-date, so I tried to find a way to update it but I couldn’t.

I guessed this might be being caused by the Childify Me plugin, but I am just guessing! I hope I’m asking this in the right place & I’m really sorry if I’m not! I don’t have much experience in this (hence why I’m using this plugin – which, by the way, is great!) so I’m just trying to find out what’s causing the problem & how to fix it.

THANK YOU so much for your help!!!

Katie

https://www.ads-software.com/plugins/childify-me/