The private key password is Optional's entry when applying for a certificate.
1.Make sure to remember the private key after you filling it in as it is not retrievable or modifiable.
2. The password may be required to import, export, install certificate or for other operations on your server.
3. If you do not remember the private key, please submit a ticket to ask Tencent Cloud engineers to delete the certificate and re-apply the domain name certificate.