JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You can expand the text box by adding this custom CSS code in your widget:
width: 60% !important;
Paste it inside your widget's settings under the "Custom CSS" tab:
You can adjust the width value with your own preferences.
Let us know if that works.
To better assist you, I have opened a separate thread for your concern. Please refer to this link instead: https://www.jotform.com/answers/991352. We will address it shortly.