Hello,
Please upload the both .po and .mo files into the wp-content/languages/loco/themes folder then go to WP Dashboard >> Loco >> Themes >> Woodmart >> then edit the language files which you have uploaded earlier. I hope your files will work fine.
Please make sure that you have rename the files like this: woodmart-ru_RU.po and .mo files.
If you will not able to do that then please send me the WP admin login details of your site so I will setup for you.
Best Regards.