You may install, use 30 days trial on one CRM organization. After trial days expires CRM GRID PLUS not work until you purchase license.
CRM GRID PLUS provided a user guide documentation, you may copy and use the documentation for personal reference purposes.
CRM GRID PLUS only use internet accessing to check new version from CRM GRID PLUS server.
CRM GRID PLUS do not store any information to cookie. CRM GRID PLUS store some cached data to browser session storage, these data automatic clear after your browser closed.
By using CRM GRID PLUS, you accepted the limitation at point  in user guide document.
You have the rights for FREE upgrading CRM GRID PLUS.
CRM GRID PLUS don't have any backdor link to other web sites. CRM GRID PLUS only link to CRM GRID PLUS domain for help document.
CRM GRID PLUS design that you can copy, distribute from your current CRM organization (licensed) to another CRM organization. After install on the target CRM organization you can use 30 days trial.
CRM GRID PLUS don't ask any information about user name and password for your CRM organization.
By using CRM GRID PLUS, you accepted CRM GRID PLUS access HTML DOM to modify and format CRM grid