Register shortcode not working

Hi There.
I’m trying to put the shortcode for registration but what ever I do, i get only the login shortcode.
This is the shortcode –
[theme-my-login register_template=”register-form.php”]
It used to work yesterday and now it doesn’t work at all.
I have inside my theme child folder a folder called –

“theme-my-login/register.form.php”

Thank you so much for your help – I’m struggling with it for a day.

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