Poor customer service. They will only reply fast if you are in the process of buying their product. Once you get your product, they will take weeks to email back to help you troubleshoot your problems. Even if you try calling them after you get your product, they will purposely dodge your calls.
This company does not allow you to directly talk to their engineers/dentists, instead they will direct you to their unprofessional customer service who all sound like they hate their job and sleep deprived. Most of them barely know English and any technical details about the products they're selling.
Their main website: theclearguard.com,
Contain a large amount of 5* reviews, but if you visit their site overtime you will notice they purposefully remove bad reviews and change 3-4* reviews to 5*.
If I knew how to report this business for fraud and scam, I would drive them out of business for the amount of people they've stole money from.
Don't make the same mistake I did and wasted 500$ here.