Problem with variants not showing correct image and price

[Samreader98]

Hi Just seeing if anyone can help. 

https://viper-fitness.com/products/viper-fitness%E2%84%A2-cable-crossover-trainer 

This is the link to my product page(this issue only occurs with this product) but when I click the second variant called " Pair " it changes the image and price however when I press the first variant called " Single " The price and image stay the same as the other variant. I have a feeling it is something to do with the back end code but just can't pinpoint exactly where the problem is. 

Any advice would be great! 

Sam

[KetanKumar]

@Samreader98 

Sorry for facing this issue, it's my pleasure to help us.

Welcome to the Shopify community!
and Thanks for your Good question.

your theme js issue 

can you please check your original theme 

[Samreader98]

Thank you for your help @KetanKumar 

I'm not familiar with code but is there a section of the back end code I can screen shot and send back to you so you can see if there is a problem?

[KetanKumar]

@Samreader98 

thanks for update 

can you please check first your backup theme or original theme this issue still there issue let me know