It’s just better if it works the other way around. Where you ask for help and then if it can’t be resolved a negative review is given. A negative review is the death-nail to a plugin. Not very inspiring to develop new plugins or fix problems with an immediate negative review without a chance to identify or resolve a problem. To foster the spirit of free development, giving a plugin a chance before a negative review would go a long way.
In any case, if you’re willing to open a support topic or add to an existing one I’m sure we can get to the bottom of your problem. You can link to the support page for WooCommerce Reviews Manually Approved.
Thanks!