meitav on "contact form 7 spinning arrow + no confirmation"

hello again,
I have managed to fix this problem. i followed this solution:
Open file:
/wp-content/plugins/contact-form-7/wp-contact-form-7.php

Edit line (around 46):

Change this:
define( 'WPCF7_LOAD_JS', true);

To this:
define( 'WPCF7_LOAD_JS', false );

and it did fix the spinning arrow problem.

however it seems that one solution drags a new problem.
th cf7 does not redirect to my thank you page.
i added this line in the additional settings section:
on_sent_ok: "location.replace('http://www.meitav-hashemesh.co.il/successfully-sent-2/');"
but no redirection.
any solutions please.
Thanks Meitav