Mail, attachments, paypal checkout, [your-mail] for mail(2), conditional fields

Good evening everyone
I have a series of problems with a contact form that is quite complex and has this series of fields:

Metodo di pagamento [select* Pagamento "PayPal" "Bonifico"]

[group PayPal]

<label> Il tuo nome
    [text* your-name akismet:author_email placeholder "Nome"] </label>
<label> Il tuo cognome
    [text* your-surname akismet:author_email placeholder "Cognome"] </label>
<label> La tua data di nascita
[date* Datadinascita max:2005-01-02] </label>
<label> Il tuo indirizzo di residenza
    [text* your-address akismet:author_email placeholder "Via/Piazza, Numero Civico"] </label>
<label> La tua città di residenza
    [text* your-city akismet:author_email placeholder "Città/località"] </label>
<label> Il tuo numero di telefono
[tel* Numeroditelefono akismet:author_email placeholder "Cellulare"] </label>
<label> La tua email
    [email* your-email akismet:author_email placeholder "nomeutente@dominio"] </label>
<label> In rappresentanza di minore
[select* Rappresentantediminore-paypal "Seleziona la tua opzione" "Si" "No"] </label>
[group dati-minore-paypal]

<label> Il suo nome
    [text* his-name akismet:author_email placeholder "Nome"] </label>

<label> Il suo cognome
    [text* his-surname akismet:author_email placeholder "Cognome"] </label>
<label> La sua certificazione medica (MAX 5MB. File consentiti: PDF, JPG, PNG)
[file* Certificazionemedica limit:5mb filetypes:pdf|jpg|png] </label>
[/group]

Scegli come parteciperai [select* scelta-paypal "Seleziona la tua opzione" "GIRO MTB + PRANZO - 30,00€" "TREKKING + PRANZO - 25,00€" "GIRO MTB - 20,00€" "TREKKING 10,00€" "PRANZO - 10,00€"]

[group certificazione-medica-maggiorenne-paypal]

<label> La tua certificazione medica (MAX 5MB. File consentiti: PDF, JPG, PNG)
[file* Certificazionemedica limit:5mb filetypes:pdf|jpg|png] </label>

[/group]

[textarea your-message akismet:author_url placeholder "Richieste particolari, intolleranze alimentari, necessità…"]
[/group]

[group Bonifico]

<label> Il tuo nome
    [text* your-name akismet:author_email placeholder "Nome"] </label>
<label> Il tuo cognome
    [text* your-surname akismet:author_email placeholder "Cognome"] </label>
<label> La tua data di nascita
[date* Datadinascita max:2005-01-02] </label>
<label> Il tuo indirizzo di residenza
    [text* your-address akismet:author_email placeholder "Via/Piazza, Numero Civico"] </label>
<label> La tua città di residenza
    [text* your-city akismet:author_email placeholder "Città/località"] </label>
<label> Il tuo numero di telefono
[tel* Numeroditelefono akismet:author_email placeholder "Cellulare"] </label>
<label> La tua email
    [email* your-email akismet:author_email placeholder "nomeutente@dominio"] </label>
<label> In rappresentanza di minore
[select* Rappresentantediminore-bonifico "Seleziona la tua opzione" "Si" "No"] </label>
[group dati-minore-bonifico]

<label> Il suo nome
    [text* his-name akismet:author_email placeholder "Nome"] </label>

<label> Il suo cognome
    [text* his-surname akismet:author_email placeholder "Cognome"] </label>

<label> La sua certificazione medica (MAX 5MB. File consentiti: PDF, JPG, PNG)
[file* Certificazionemedica limit:5mb filetypes:pdf|jpg|png] </label>

[/group]

Scegli come parteciperai [select* scelta-bonifico "Seleziona la tua opzione" "GIRO MTB + PRANZO - 30,00€" "TREKKING + PRANZO - 25,00€" "GIRO MTB - 20,00€" "TREKKING 10,00€" "PRANZO - 10,00€"]

[group certificazione-medica-maggiorenne-bonifico]

<label> La tua certificazione medica (MAX 5MB. File consentiti: PDF, JPG, PNG)
[file* Certificazionemedica limit:5mb filetypes:pdf|jpg|png] </label>

[/group]

IBAN IT16Y0101585610000070628101, Intestato a ASD MONTIFERRU MTB

Ricevuta del bonifico (MAX 5MB. File consentiti: PDF, JPG, PNG) [file* Ricevutabonifico limit:5mb filetypes:pdf|jpg|png]

[textarea your-message akismet:author_url placeholder "Richieste particolari, intolleranze alimentari, necessità…"]
[/group]

[acceptance Terminiecondizioni]  Termini e Condizioni [/acceptance]

[submit "Invia"]

To use them with this contact form I installed the pro version of the following plugin:

• Contact Form 7 – PayPal & Stripe Add-on Pro
  And also the following plugin;

And also this one:

• Conditional Fields for Contact Form 7

To sum up:

• When the user, in “Metodo pagamento”, chooses “Bonifico”, pressing “Invia”, the form returns an error;
• When the user, in “Metodo pagamento”, chooses “PayPal”, the redirection to PayPal returns an error;
• With the email I receive from the user, as administrator, I would like to receive only the filled in fields and also the files attached by the user (attachment problem, I can’t understand how to insert the tag correctly) with a layout chosen by me;
• I would like to send an automatic reply email as a receipt to the user, but the plugin does not allow me to use the [your-mail] tag because it is considered unsafe. In this email I would like to attach a file (same problem as attachments);
• In general, in the Email tab I am notified of an error that I don’t understand;
• The Conditional Fields for Contact Form 7 settings seem to work well. The only annoyance is that I would like the fields that are not visible based on what the user chooses not to be taken into account in the email I receive as the recipient of the user’s request.

Thank you in advance

The page I need help with: [log in to see the link]