Don’t worry about your customers, I’ve just figured out that if you change your username, the old one redirects you to the new one.
I changed my username from “osama_sayegh” to the current one, so the old URL videohive.net/user/osama_sayegh redirects you to videohive.net/user/OsamaSayegh .
I think that most of buyers don’t remember the username of the guy they purchased from him as much as they remember the name of the item they purchased, so they could go to their download page and find the guy they’re looking for.
If one of your buyers searched for your old username, unfortunately he would get nothing, to avoid that you can add your old username to your items’ tags, by doing that, anyone who searches for your old username he will get every item you added to it that tag.
I hope that helps and you don’t lose any customer.
You’re welcome, it’s my pleasure to help you,
I was going to suggest creating a new account that has your old username and linking the new one to the current one, but I wasn’t sure if we can do that, so I typed my old profile URL to see what would happen, I got surprised to see that it redirected me to my new profile URL!
That is how I figured it out.
Again you’re welcome