YasinShaikh Please use english in this forum exept for regional section.
Unfortunately there are no option to change email for registration info.
But is not too important, cause its only use in first activation the box or dongle as record list for server purposes .
But, you can change your current email in UFi Credit Account,
and this is more mandatory to direct notify everytime you top up your credit balance.
You can follow this picture shown below how to do that.