First of all, congratulations for your great work with opigno, I love it!
currently I am trying to develop a course in opigno, I want my site to be multilingual so I added a spanish translation to my site. I added the entity translation module and the title module which is required for entity translation to work in DP7.
the interface translation works fine.
but when I try to translate a lesson it says: No translatable fields
any idea what could be wrong?