In tip in bottom part of screen, it should be some another word instead of "исполь". I was unable to upload screenshot to my message, so external link provided --> https://postimg.org/image/ikg6g6zep/
Thank you for raising this issue.
I asked our Russian language specialist to take a look on it.
She said that she does not see issue with that word.
Product Manager @ Lingvist
"исполь" stands for "используется". What would be your suggestion instead of the word used? Maybe I missed something :)
Russian-English linguist @Lingvist
Looks like your connection to RU-EN : Typo was lost, please wait while we try to reconnect.