I have tested four accounts as follows:
Account 1: This account was used for gaming under a signature. After a week, it was blocked due to the use of god mode, critical hits, and unlimited ammunition.
Account 2: Similarly, this account was used for gaming under a signature. It was also blocked after a week, but no special modes were used.
Account 3: This account was used for gaming without a signature for a month, and it was not banned. It used damage multipliers and defense multipliers.
Account 4: This account was also used for gaming without a signature for a month. It utilized god mode, critical hits, and advanced through maps with levels higher than mine. As a result, it was banned.
Personal Conclusion: Currently, there may be special methods to verify program signatures (referring to the backend of Chinese platform Pinduoduo, considering Tencent as the largest shareholder). The backend is also monitoring your behavior, including damage data and combat power data. It is possible that AI or other data is used for comparison.
Good luck to everyone.