submitting not showing success/error message or sending the form

Hi,

My Contact form is not showing any success messages. It does the little arrow animation next to the submit button for a couple of seconds then stops but the form with the entered content stays the same, it doesn’t reset and it doesn’t show any success messages.

I don’t have any additional settings in. I have however tried to put the
on_sent_ok: “alert(‘sent ok’);”
on_submit: “alert(‘submit’);”
on the documentation page in and tested it again but it only gave a pop-up saying sent ok and still didn’t reset the form or made the green box with the message sent successfully message in it.

I am using BeTheme and all plugins and themes are up to date.
I have Google Analytics added at my theme options but not on my form specifically, as it seems from other threads that that might be an issue. I have removed the tracking code and tested it again still nothing.

I am using Google reCAPTCHA on the form.
One of my site with the same theme’s form is working fine.
I don’t have junk plugins on my site so deactivating all the plugins and activating them one by one is not a solution for me. what if i get to a plugin and that plugin is the issue, what then? how do I work around it because i need all the plugins currently on there.

No idea what else to do…

Link where form is (sorry, it’s all in my client’s native language, Afrikaans):
https://s-leer.co.za/kontak-ons/

Form structure:
<p>Jou Naam *<br />
[text* jou-naam] </p>

<p>Jou E-pos *<br />
[email* jou-epos] </p>

<p>Onderwerp<br />
[text jou-onderwerp] </p>

<p>Jou Boodskap<br />
[textarea jou-boodskap] </p>

<p>[recaptcha]</p>

<p>[submit “Stuur”]</p>