Strings translation in wrong language

Hi, I have created 2 languages in Polylang (spanish is the default and english is the secondary). But in the strings translation tab only appears text inputs for a spanish translation.

You can see two screenshots here:

https://www.escalantech.es/languages.jpg

https://www.escalantech.es/strings_translation.jpg

I need the strings translation to english, not spanish, because the original strings are in spanish.

My settings:
1. Post name permalinks type
2. Static front page
3. https://www.escalantech.es/settings.jpg

Thanks for your help.

https://www.ads-software.com/plugins/polylang/