Theme is not being recognized correctly sometimes :-(

hey guys,

have a little problem x_X.

I have a custom woocommerce template but its not working correctly on some installations and this ends to huge changes on site view.

The only thing i could find between working and not working situations is as below:

here is when theme is working correctly: https://awesomescreenshot.com/0524bwk12b

and here is when theme is not working:
https://awesomescreenshot.com/0654bwk4cf

Im not sure if that is the problem, but I couldnt find any more difference even by installing a fresh un-modified version of theme.

I am using latest version of wp and plugins on both situations.

Any comment to help me out will be appreciated as i have already more than 300 products on my site and cant afford installing a fresh copy of wp and theme and start posting products there X_X

Thank you all in advance.