Hi, friend!
Other friends on the Forum have also consulted about changing the system time of the EG8145V5. However, this tab is not displayed on the device page in the uploaded screenshot.
I have just confirmed that the system time of the EG8145V5 can be changed only after the administrator account has logged in.
Due to the restrictions imposed by the Forum, I cannot provide you with the admin account and password.
You are advised to contact the device provider or ISP to obtain the administrator account and password.
Thanks!