Unable to start instance

Unable to start instance: Instance «instance number» is disabled and will not accept any action requests. Please contact customer support to reenable.

and send me this at email :
Oracle has received notice of or detected unusual and potentially harmful activity originating from your tenancy.

Traffic Details: Crypto or Cyber-Currency Coin-Mining Activity

Under your agreement with Oracle, you are responsible for the maintenance and security of this resource. We have determined that there is a significant threat to the functionality, security, integrity, or availability of our services, including violations of the Oracle Cloud Acceptable Use Policy, and your resource(s) has been disabled.