Thank you very much for your reply. I did find out what was wrong, and fixed it. The thing was working fine until about 3 days ago, when I added new posts.
GTranslate does not translate the new posts, and in the old posts of my blog, it only translates the H1 or H2 etc.. headers (the titles of different sections), and does not translate the content.
In summary it is only partially translating the material...
I had done some manual editing to the Spanish and to the German translations, and those are fine (I guess because they were manually edited), but for the other languages, I only get partiall translations.
The interesting thing is that if I go to settings, and chooses "on the fly", then GTranslate translates everything fine.
Would you mind taking a look and letting me know what's wrong?
Also, if I fix this problem, I was thinking about installing GTranslate in another blog that I'll be putting together. Do I need another license from you? If so, do you have discounts for repeated customers?
I do appreciate very much your prompt reply and resolution to this problem, and please, do not hesitate to contact me if you need further information.