Shopping cart total isn't updating

ello,
I've created a form with two payment options: PayPal and Bank Transfer.
I have two problems:
1) The shopping cart total isn't updating.
2) If a user has a Gmail email address, they don't receive anything (or, "they aren't receiving any emails").
See the form:
https://www.sportellocittadino.it/form-tessera
Thank
Thanks

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