Hi Ricard,
Thanks for your answer. I have forwarded everything to our developer who followed your steps but updating the theme and deleting the whole theme folder didn’t work.
So we uploaded the new theme, added styles file from the old one but probably you used absolutely different classes or even functions, we don’t know. Our developer suggested that probably you just need to fix an issue in an old version of theme.
Anyway, please let me know how you would suggest us to proceed. We have given you our credentials confidentially, so let us know if there is anything else we can do to help you solve this for us.
P.S. This is getting very urgent to us since we can’t edit or add new articles..