Loss phone number and cannot log in Authenticator

Hi All,
I’m from VietNam. in the past, when I setup mobile Authenticator, I could not receive sms by local phone number so I use a free phone sms receiving service to login .
Now I reset factory my phone and I want to login again Authenticator but I cannot because I don’t receive SMS by the old phone number. Because it was a free phone number and now I cannot access it again.
Please tell me what I should do to login the Authenticator.
My email is hungtrash17@gmail.com
I must create a new Battle account to come to this forum.
Thanks all.