technical support
<p>Dear users, if you have any product or technical questions, please email us your questions. We will have professional technical support colleagues to answer your questions.</p>
<p>Technical support email: <strong>mathstudy2020@163.com</strong></p>
<p>thank you!</p>
<p>What questions can you contact our technical support? Here are some representative questions:</p>
<ol>
<li>
<p>Application crashes during use.</p>
</li>
<li>
<p>The application cannot correctly judge the user's answer;</p>
</li>
<li>
<p>Cannot be used normally after purchase;</p>
</li>
<li>Suggestions for improvement.</li>
</ol>