Hello. Thank you for contacting the Toolset support.
I checked the URL you shared but I do not see any form. It seems I will have to login to see the form.
Could you please share admin access details so that I can see the form and check whats going wrong with your setup.
*** Please make a FULL BACKUP of your database and website.***
I would also eventually need to request temporary access (WP-Admin) to your site. Preferably to a test site where the problem has been replicated if possible in order to be of better help and check if some configurations might need to be changed.
I have set the next reply to private which means only you and I have access to it.
I've switch to the "expert mode" to edit the form:
=> hidden link
And I've removed the default value that was set as 1 and saved the form and I can see its working as expected. Could you please confirm it works at your end as well.
Yes, for now. Even if you try to disable expert mode, there is a chance that you may lost GUI. I suggest you should keep using expert mode for this form or if you want to make any changes in GUI, please take backup of your form/site.