When you upload to WordPress you may hit a limit. This is set by your PHP settings.
WordPress is built on the code 'PHP'. You can easily change the settings on STORM to increase your Upload Limit:
1) Click on your website on STORM and then:
2) Go to the PHP Settings
3) Change the Upload Limit to the file size you think you'll need. Most files won't be above 32 MB.
Once you change the setting it will automatically update.