[Решено] Booknetic reservation not showing proper translations

Background of the issue:
I am trying to resolve an issue with the Booknetic plugin reservation that shows the original language on the translation page. The issue can be seen on this page: скрытая ссылка.

Symptoms:
The reservation system is not displaying the proper translations and instead shows the original language on the translation page.

Questions:
Why is the Booknetic reservation not showing the proper translations?
How can I fix the language display issue on the translation page?