Web build displaying "Not Safe" alert to users

[esmlima]

Describe the bug
In web server, the form is displaying a "Not Safe" alert to users and disabling autofill behaviour of the form.
Chrome / Android also shows up the built in Credit Card scanner to make a photo of a new credit card but it didn't fill the fields at the form.

To Reproduce
Just deploy the master example, deploy it over a web server and test to autocomplete the form using Chrome or Safari browsers.

Expected behavior
I expected Chrome and Safari to autofill previously saved credit card numbers of the users. Also expected Chrome to fill the form based on Credit Card scanner of a new card.

Screenshots

Additional context
I have created a simple form with only autocomplete enabled form and the feature works perfectly:
https://payment.gula.mobi/card.html

But the form generated by the widget doesn't work:
https://payment.gula.mobi/