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First of all, your account's "Form Views" numbers has reached its limit, that's why your form is showing the following screen even if it monitors properly.
However, you need to remove the script embed code and add the iFrame embed code into your related table on your webpage's HTML. Please, see it from the below: (orange marked area shows the iFrame embed code which you need to embed)
<table style="width: 750px; height: 228px; margin-left: auto; margin-right: auto;">
<td class="zvonite" colspan="4"><img src="//static-eu.insales.ru/files/1/1925/1533829/original/contacto2.jpg" alt="contacto2.jpg" width="321" height="316"></td>
<td style="vertical-align: top; text-align: center;"><iframe id="JotFormIFrame" onload="window.parent.scrollTo(0,0)" allowtransparency="true" src="https://form.jotformeu.com/51604526078354" frameborder="0" style="width:100%; height:539px; border:none;" scrolling="no"> </iframe></td>
<td style="vertical-align: top; text-align: center;">
In addition, you can replace the code by using the code above. It starts on the 959th line and ends on the 969th line on your HTML. You can see it from the below:
For further assistance, please do let us know.