ufi box registration email address change

Hello Team,

I bought ufi box 4 months ago than i complete install or setup it with my gmail.

but now i forget my gmail password so i could not recover password during many try i have many loss.

so i want to update or change my old gmail (mdm08505@gmail.com) who registered with ufi or ufixer to new gmail (mofejul88@gmail.com).

SO PLZ HELP ME