Not working on custom post types by default.
The media uploader is not working custom post-types.
Please register some new user and sent the login details to info[at]gvectors.com email address to allow us to check it.
Please use the google , fb login by clicking on the top right login button.
First of all Please navigate to Dashboard > Comments > Settings > Addons > Uploader tab make sure:
- "Post types supports uploading" is enabled for the current post type.
- "User roles allowed to upload files" is also enabled for the User roles.
I also please try to deactivate the Jetpack plugin and check again, it also may cause the issue.