[Решено] My String Translations are stuck on Translation in Progress.

Background of the issue:
I am trying to translate Strings automatically on my site скрытая ссылка. I selected the strings from the String Translation page in WPML and clicked 'Translate' at the bottom to start translating.

Symptoms:
The plus signs next to the strings changed to Cogs, and they have been stuck like this for hours.

Questions:
Why are my String Translations stuck on Translation in Progress?
How can I resolve the issue of strings being stuck in translation?