Re: How to find out how long you have been on RPoL
The best way is the earlier suggestion I made in another forum in community chat (which by the way I'm ecstatic to know it has pointed many in the right direction):
Your email.
RpoL sends an email the moment you sign up to verify your account plus gives you your current username and password upon first registering. It's the best and accurate way to see when you forst singed up, date and time, granted that you didn't delete the email after getting it. Other than that, there is no other way truthfully.
From what I've seen, rMail wasn't around for half of RpoL's life and even that isn't helpful because I'm sure nobody used it upon signing up that very first day and they also don't send you a welcome to RpoL rMail anyways.
Your first game is also not a way to go because campaigns end eventually and RpoL does a clean up of inactive and deleted games so it may be long gone.
Your first forum post likely is gone as well as they clear the public forums eventually too unless mysteriously. This is also a solution that doesn't accurately help because you may not have ever posted in the public forums until much later from your sign up date.
If you don't have the welcome email, chances are you deleted it and it happens. Most do, but I was one nat didn't for some reason.
Good luck!