No errors in Javascript console in Firefox or Chrome. I’ve installed it on a plain vanilla WordPress site with no other plugins or themes to try and figure this one out.
Here’s the complete form
<div class="container" id="bsNHLc">
<div class="row">
<div class="columns full">
<div class="container cf7-sg-table" id="cf7-sg-table-1543318910568" data-button="Add New Row">
<div class="row cf7-sg-table">
<div class="columns one-half">
<div class="field"><label>test</label>[text text-105]
<p class="info-tip"></p>
</div>
</div>
<div class="columns one-half">
<div class="field"><label>test</label>[text text-106]
<p class="info-tip"></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="container">
<div class="row">
<div class="columns full">
<div class="field"><label></label>[submit "Submit"]
<p class="info-tip"></p>
</div>
</div>
</div>
</div>
and the page where this is demoed is https://wordpressdemo.2020test.net/sample-page/