Error while attempting to convert file:

My host says they blocks all outgoing connections by default if this helps you??

That would depend on your hosting setup. If you’re on Apache, then you probably want to look at wherever your error log is.

Can you confirm whether or not uploading images normally works?

Does this plugin require one time or time to time connection to the remote server ?

Normally images work fine. I just tried and it worked.

What remote server are you referring to? The plugin doesn’t communicate with anything except the WordPress server.

Well i guess my webhost as that was the question from support.
Isn’t the .docx import file transferring from my local computer to my webhost into a directory or am I missing something?

No, the document is converted in the browser using JavaScript. The plugin only communicates with WordPress to upload images.

How do the images get into the correct directory for my theme?

What can I do for you to solve this?

How do the images get into the correct directory for my theme?

The images are uploaded through WordPress, meaning they’ll get put wherever WordPress decides to put them: normally, that’s the wp-content/uploads directory.

What can I do for you to solve this?

The most useful thing would be to find the error that’s causing the 500 response.

Failing that, I suppose you could find out what gets sent when you successfully upload an image through WordPress:

* start editing a new post
* open the developer tools
* go to the network tab and make sure it’s recording network requests
* upload an image through WordPress — you should notice network requests when this happens
* save the network log and send it to me

But the actual error is likely to be extremely helpful, and it’ll probably be difficult to work out the problem without it.

what developers tools?? there is a dozen of them listed as plugins

The developer tools are built into Chrome. Press F12.