- Check all your element-IDs → all button-IDs are right?
- Check your dataset-ID.
- Check if the dataset is connected to the right DB.
- Check if button-IDs are the same as the related datafield-IDs…

For example:
Button-ID = “#email” → related datafield-ID should be —> “email”
Normaly you should now have enough informations, to get your project to work.
If you still can’t get it to work, then create a → BLANK new site and try first to reconstruct the shown example. Then understand it and then try to complete your own issued project.