We're very sorry that the extension did not work out for you. We would, however, like to be sure that reviews are accurate and fair, and you've written one that is neither.
3 hours for a reply in a support system is nothing to complain about.
You don't have to touch your database to increase max upload file size, and if you don't want to adjust php.ini or ask your hosting company to do it for you, then you can use the provided details on how to 'manually' install the extension.
The complexity of this extension does require some assurance that a server environment will allow it to work, however, it's not so complex as to keep 99% of the people who download and use it successfully from doing so.