When you first join a server, all your verified addresses will not be linked by default. This means your privacy comes first and you will not be assigned any roles without authorizing it via /verify link. This command will enable this bot to assign automatic roles and use other features on this specific Discord server for your account. You do not need to use this command if you are adding a new address via /verify add on the same Discord server. In this case, your account will be automatically linked.