"All plans include a 30-day free trial and can be cancelled anytime."
Although the company states that there is a 30-day trial, I was charged immediately.
After an error, I followed the guidance of the company's support forum and reinstalled the plugin. Result: my "premium" status was reduced to "free".
In short, I felt cheated and I think I threw my money away.
There is no trial.
I definitely do not recommend this plugin.