So where did you download Blokada from:)?
Edit: If you downloaded it from the Google Play Store, I recommend to uninstall the version and install the full version from blokada.org (check this article for a longer description)
Android Auto Wireless sounds like an app. Could you try to set the status of this app to ‘bypassed’ in Blokada in the menu Apps / probably Installed apps? Reboot your device afterwards. Does it work again afterwards?