Translate not affected to widget on Multisite

Hi guys, i have uploaded .mo file and my admin interface became translated well, but widget still in english. I have checked strings that not translated in .mo file and they actually exists and translated. I have no ideas why translate is not displayed on widget…

I have tried to deactivate ajax login in network, tried delete widget and drop it back again, no luck.

Please heeeeelp! Plugin is awesome and very useful! Thank you in advance.