Premium Subscribe and What'sApp Acc block

I use the app to send advertising messages to my customers and to the customers of the store I work for. Even after changing my number and account, I still get blocked. I paid for the 1-year premium subscription and I can't use the app. The app says that it simulates normal human use, but it still gets blocked. What's the point of selling a product to companies and users who will use the app to advertise knowing that this practice will get blocked? I used the app for years, but now, I have no reason to use it anymore.