Hey @Roderick Chow Racheal from the support engineer team here
I see you are working with one of teammates now, so I’ll leave you in their good hands but I did take a look into your account and I see you haven’t submitted a verification yet. As of May 15, 2022, any new US toll-free number cannot send SMS messages unless it has been verified. By verifying your number with your carrier, you are less likely to experience carrier filtering because your phone number will have a “verified” tag associated with it. You can read more on this here!