If the product is not registered, there is a trial version restriction.
Please refer to the image below for restrictions on the trial version.

After registering, you can now enjoy the privileges of the free account that allows you to access limited videos, record screen as well as convert videos. However, these privileges are still under a free trial. There are limitations like you can take screen recording for only a few minutes. You can upgrade to its full version to get the most of the tool and perform all your downloading tasks without worrying about any restriction