Follow these steps to update your mobile number on digitalexchange.id:
Open the digitalexchange.id website and log in to your account.
After logging in, go to "Account > My Profile."
Edit the "Phone Number" section in your profile.
Enter your new mobile number.
Click "Get Code" to start the verification process.
Enter the verification code sent to your active mobile number.
Enter your Google Authentication Code.
If all details are correct, click "Submit."
Your phone number has now been successfully updated!