I tried it and these are the three posibilities and their results.
- Disabling the "Adds Suffix to URL" it works.
- Set the "File suffix" option to .html and "Adds Suffix to URL enabled doesn't work.
- Disabling the "Adds Suffix to URL" and setting the "File suffix" option to .html it works.
Now the URL's are like
motosjuancortes.com/sobre-nosotros-2?lang=es I want to eliminate "-2?lang=es"
Can this be done because it is a K2 article? It is necesary the k2 plugin to improve the articles url's generated by k2mart? Can I install the K2 plugin in a joomsef free version?
And the last one Is there a Spanish translation?