Issue with submit form rendered at external iframe


I have this page loaded with an iframe in another site:

Five days ago the submit form stoped work only in the iframe, when i open the console this error returns:

SecurityError: Permission denied to access property “Cypress” on cross-origin object timmovel.682be2d88.js:38

All the validations works fine, the issue happens only when it’s all ok for the ‘submit’

I’m already restore an old version of the website and the error occours too

PS: Use Secure Frame Headers is OFF

Can anyone help me?