Their Smart Pass service is completely useless and a hidden YEARLY subscription. You will go through a series of pages stating it's all monthly but the actual subscription will be one year charged monthly with no possibility to cancel. They promote it a lot so you'll likely subscribe to try, except now they have you for a year. It's just one of many dark patterns they use. For instance you can't cancel directly you have to call them.
The service is ok most of the time, but if anything goes wrong their policy is to blame you first and it's up to you to keep contacting them. Don't expect an apology either.