I tried this plugin, and so far, I'm very impressed.
However, there's avery short expiry, as you're told the FREE licence is about to expire.
You then have the options of upgrading, starting at $9.99 per month to $59 per month.
I think it's better to replace with an alternative plugin such as Yoast.
Yes, there's more work to do, but the cost per month makes this an expensive option.
Sorry. Great plugin, but too expensive.