An Reolink account can be used to place orders on Reolink website, check history orders and view Cloud videos.
If you placed an orders on Reolink website without signing in Reolink account, you can not find out the orders, you may find your orders by registering a Reolink account with the Email address which you leaved in your history orders. If you use the different Email address, you can't find the history orders. Then you can login to your account, and click "Find" the history orders
You can refer to the link to sign in an Reolink account, How to Register an Reolink Account?