1. Contact the gym staff: you can ask the front desk or management of the gym for help. They may be able to provide some information about how to reset the password or unlock the password lock.
2. Use a spare battery: If the password lock uses a rechargeable battery, you may need to replace it. You should be able to reuse your password after replacing the battery.
3. Find the manufacturer of the password lock: If the above methods fail to solve the problem, you can try to contact the manufacturer or supplier of the password lock. They may provide some solutions or guide you on how to reset your password.
I hope these methods can help you solve the problem.