Why does AMR keep losing/forgetting all my toons?

Every few days i login and AMR had a total blank for my toons. I have to start all over importing everything. My entire list of toons is totally gone.

We store your list of recent characters on a per-browser basis right now in the browser’s local storage (it is on my to-do list to move this to the server and synchronize across any device that you may be using).

Is it possible that you are using e.g. a browser addon or setting that clears local storage in your browser periodically, or when you close the browser window?