Hi Luong,
Many thanks for your post.
Banckle offers both free and paid plans to its customers. Initially we offer 30days of trial period with no usage limitations so that you can use the application and assess the business value. After 30 days, when your trial period will be over, you will be converted to Forever Free plan. This plan is for our users with less usage requirements and has usage limitations.
For details, please have a look here on our application pricing page and under forever free plan, click on see limitations. We recommend this blog post for your understanding of the application and its feature usage. You may click here to know why one should subscribe to paid option, to avail all the goodies.
We hope this helps. In case you have any further queries, please feel free to share and we will be happy to assist you.
Best Regards,
Banckle Support Team