The only way to resolve a suspension is by checking all policies and guides below and compare this against your website and business. And make sure to resolve all possible reasons. As that is the only way to increase your success rate.
https://support.google.com/merchants/answer/6150127?hl=en
https://support.google.com/merchants/answer/6363310/follow-the-merchant-center-guidelines
https://support.google.com/merchants/answer/7052112
https://support.google.com/merchants/answer/4752265
https://support.google.com/merchants/answer/13693865