I am writing because Enteko (preview) does not match what I have loaded into the project. The preview repeats the options of the questions, and this also happens in KoBoCollect. Besides, if i close the sesion, all the correct options are lost.
Welcome to the community @AyelenMuchiutti! Would you mind sharing with us the screenshots of your issue? Maybe that would help us better understand your issue pictorially.
Might be duplicates in choices sheet.
Did you check your form with the XLSForm Online Validator?