How do I log into my GO SMS Pro account?

[AC Question]

how to log into GO SMS Pro account?

I had Go SMS Pro on my Note 5, it was installed late Dec 2015/Early Jan 2016...I don't' know what version it was. I paid for the VIP service and did a back up regularly. REcently, my phone was destroyed. I have loaded the SMS App on my new phone but can't figure out how to log into my account to recover the backed up messages. HELP...