Thank you for bringing this issue to our attention. We apologize for the inconvenience caused by the crash after upgrading the HQ. After investigating the problem, we have determined that it only occurs in the WebGL version of the game. As a temporary solution, we are offering a downloadable version of the game for Windows that does not have this issue. We are working hard to fix the problem in the WebGL version and will release an update as soon as it is available. In the meantime, please download the Windows version and let us know if you continue to experience any issues. We appreciate your patience and support as we work to improve the game.
Thank you for playing!