Dear, we discovered that Excel functions vary according to the language and version, there was a syntax problem that gave an error due to an inappropriate character, in turn a collaborator analyzing the formula and that our photo columns had empty cells added a function SI (IF) to that the empty cells are not filled (Otherwise it was going to be all full of links that were going to redirect anywhere). Now the links work perfect !!! Tomorrow we will try downloading with down then all. Thanks a lot for being there. @Josh @Kal_Lam 
this is te sentence that work for this proyect
=SI(ESBLANCO(A2);"";HIPERVINCULO(CONCATENAR(“https://kc.humanitarianresponse.info/attachment/original?media_file=USERNAME/attachments/”;A2)))
