1-1 support is only provided to Pro licenses. If you don’t have a serial key, please use the Support Forums on WordPress.org. If you have a question about the plugins, you can write a comments on the description page of that plugin.
Keep in mind that the price of my plugins are below the average cost of hiring a developer for one hour. I prioritize people I can help easily (so make sure you read the FAQ, tried to debug, checked your PHP Error Logs, and read this: about support).
Please note that I live in Japan. I am trying to keep my process optimized in order to help you all and find time to improve the plugins 🙂