DrClever PTR is our Public Test Realm version of the game, its used to test out future patches: Warcraft III: Reforged PTR - Version 1.35.0 - PTR Discussion and Bug Report - Warcraft III: Reforged Forums (blizzard.com) You can access it within the Battle.net desktop app by going to the Warcraft III Reforged tab within battle.net → Above the play button use the drop down and select the Public Test Realm → Install if this version of the game works its likely a bug that will be fixed in a future update. You don’t have to use the PTR but if problems were to continue on the PTR for you it’s a good idea to bug report it.
Thank you.