This was probably ok … the stable ROM available for Easy Installer according to https://images.ecloud.global/stable/hotdogb/ is at Android 11, R today. Having rolled back have you restarted the device in Android 11, R and checked it is working ok without adding a Google account ?
Might be best to check out the full log Howto troubleshoot issues with the easy-installer feel free to paste the log here.