Dataset does not update - double inputs

I have prepared a dataset, and connect it to a table.
Although the dataset is correct, some entries are displayed twice and some, although deleted from the dataset, are still displayed. I have delete and reconnected the data already…in preview is fine but not when I publish it.

Thanks for your help!
Annalisa

Have a look through Wix Support for Datasets:
https://support.wix.com/en/wix-data/database-collections
Read about ‘Accessing Your Sandbox and Live Data’ and ‘Syncing Data Between Sandbox and Live Database Collections’ and ‘Deleting Fields from a Database Collection’ and others to see if any of the guides help you.

Also, have a read of this basic tutorial and see if it helps too:
https://support.wix.com/en/article/corvid-tutorial-displaying-database-content-on-a-regular-page