After the trial ends, you can stay on the free plan as long as you want. No subscriptions are required to stay on a free plan.

Also, we have a free IP-Alert feature as a separate extension, so you need to install it at this link.

https://chrome.google.com/webstore/detail/seller-assistant-app-warn/bccpegbeakkofioonldfbhgdcdjmkfnk?hl=en