The first step is to make sure that you have the correct version of LaTeX installed on your computer. If you are using an online platform, ensure that the platform supports LaTeX. Additionally, check for any typos or missing code in your LaTeX equation.
One possible reason for this issue could be that there is a conflict between the code for the private message and the LaTeX code. Check if there are any special characters or formatting in the message that could be causing the problem.
Yes, you can preview your LaTeX equations in private messages before sending them. Make sure to use the preview feature provided by the platform you are using. This will allow you to check for any issues and make necessary changes before sending the message.
The length of LaTeX equations in private message previews may be limited by the platform you are using. Check the platform's guidelines or documentation to see if there are any restrictions on the length of equations in private messages.
If none of the above solutions work, try reaching out to the customer support team of the platform you are using. They may be able to provide further assistance or troubleshoot the issue for you.