What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
By injecting some custom CSS code to your form, you can easily increase the width of the columns on the "Matrix Table" field. Below, you will see the necessary code. On the red marked area, you can adjust the width of the columns by changing the "px" value.
Please, try this method and let us know the results.