Variation Error -Woocomerce

Hi to all!!!!

I have an error with my cariations product. I have been looking for a solution but i am desperated now

In the variation product page i have some issues (only in the variated products page, the non-variated products works propertly)

1) There is no add to cart button (i suposse its beacause there is no selected variation)

2) The list of variations is empty, there is only “Chose an option…”

3) If i configure the product with a defalt selected variation, there is a error message that said something like this (its in spanish i will try to translate as good as possible)

“Messaje of the page XXXXXX”

We are sorry, there is no products that seems like your selection

Please select a different convination”

Any one have some idea????? Im so lost in this part

https://ww.wp.xz.cn/plugins/woocommerce/