Problem with JCH OPTIMIZE

[AlexM777]

Hello. I have a problem with JCH OPTIMIZE. I have installed virtuemart on my website and on the product show page, there is a parameter for the goods - volume (1л, 4л, 5л, etc.), if jch optimize works in minimum-deluxe modes, then everything works fine and the product is updated in ajax mode , but if I turn on the premium or optimum mode, then the switch works only once (example 1л.-> 5л.- works, 1л.-> 5л.-> (back) 1л.- does not work.Error -"error not update". Excluding individual scripts does not help, exceptions for the entire page help. Here is the link to the showcase of my site https://www.motuls.ru/podbor-masla