It is working fine for me. I believe I had an issue with this integration last month. When I logged in to the app it made me change my password. After uninstalling and reinstalling the integration to update my password, it started working again.
I installed 5.2
When I start Smarttinq, I got the notification: : 500 Internal Server Error Server got itself in trouble
I Deinstalled LGE smarttinq sensors. Reboot the Home assistant and tried to install the Smarttinq again.
I got the same notification: : 500 Internal Server Error Server got itself in trouble