Dsers doesnt work on my shopify store, no variants shown

[Cherry_Moon]

long story short... I contacted both dsers and shopify and both of them are saying its not their faul. When I try to purchase a item imported from dsers it put me to the site with shopify error, when added to the card it says no variants. sku's ,localization etc is checked. If someone can actually help i would give him a head