How to Participate
To participate in the public test, you must have a Diablo III game license attached your Battle.net account in good standing (i.e. it hasn’t been suspended or banned). In addition, you will also need to download and install the Battle.net desktop app if you have not already done so.
Create a PTR account. To create a PTR account, log in to Battle.net Account Management and double-click on your Diablo III game license; this will bring you to the game management page. On this page, click “Create a PTR account.” If you’ve participated in any previous Diablo III PTR (including the Reaper of Souls beta), the “Create PTR account” button may not appear. This is because you’ve already created a PTR account and can therefore skip this step.
On the Diablo III screen, there is a drop-down menu right above the “Play” button (note that this may say “Install” if you do not have Diablo III currently installed). Select “PTR: Diablo III” from this drop-down menu before proceeding.
You should now have the option to install and play the patch 2.3.0 PTR.
The 2.3.0 PTR is available in all supported languages, and accounts from all regions are eligible to participate.