Price of product combination - Presta setting or template ERROR?

[yogaorsi]

I have problem with appearance of price of product combinations. Prices are set in Prestashop admin screen, but in the Shop it does not work proper. I do not know if it is a setting problem or a template error.

Here the price looks correct: 

Here it shows zero: 

 

Please advice me how I shuold set it? If it is a template error in your opinion, please also let me know. I needed an expert's opinion about it if I want to go back to the template developer. 

 

Thanks in advance,

Orsolya