I am sorry, the name is not button fields, is radio buttons.
In the field “desayuno”, where you have the options: with / without
please check here:
http://od40.nl/site2016/rooms/facilities-rates/?lang=es#book
The Terms and conditions field was also a radio button, but I changed it to checkbox, and it allowed to have the 3 languages saved. But in the radio buttons, I write the translations, but the system does not save them.
