Hi @Anonymous ,
Firstly, did you set the formula that you showed to the form's Visible property?
If so, I think this is wrong.
The form's Visible property should be set to ture or false.
If you want to set a form's mode, I suggest you two ways:
1)Set the form's DefaultMode: FormMode.Edit
2)Set the screen's OnVisible/Button's OnSelect: EditForm(Form1)
Secondly, please check your connection's name and the form's data source.
Since all your data cards have error message, I think the data source may be invalid.
Please try to recreate the form.
Best regards,