If the device is still not behaving as expected after following the suggested settings from this article "https://support-splashtopbusiness.splashtop.com/hc/en-us/articles/5534716949275-Set-Computer-to-Never-Sleep"
1. Proceed to download the file scripts at the bottom of this page to your Download folder
2. Once the file scripts are downloaded, you need to make the files executable by running the following commands:
sudo chmod a+x disable_sleep_permanently.sh
sudo chmod a+x restore_default_sleep.sh
3. Once the file is executable, you can run the following command from a terminal on the "Downloads" folder to disable the sleep mode.
5. To restore the sleep mode to the default settings, run the following command from a terminal in the "Downloads" folder.