There are several potential reasons why the InstantUploader plugin may not be functioning correctly on your GoDaddy or other WordPress website.
The primary issue often stems from your website's hosting settings, which may be blocking the InstantUploader IP. This means that requests originating from the InstantUploader server could be blocked by the hosting service, leading to a 403 error.
To resolve this issue, your server needs to permit the following InstantUploader IP: 74.207.245.34
For GoDaddy users, you may need to refer to the help article on how to allow or block website access. This information can be found within the website security plan. For further details, please visit the following link: https://il.godaddy.com/en/help/allow-or-block-website-access-27422. Please note, to enable specific IPs on GoDaddy, you will need to subscribe to their website security plan.