In Administration - Device Settings, in the Miscellaneous tab, you can configure the time to keep the session on a terminal active when the terminal is not responding.
In the Terminal session timeout when not responding in seconds field add the time you want (in seconds). The default is 30 seconds.
Click Save all in the upper-right corner to apply your changes.
In case you want to remotely register and log in to a device, click Open Device Code Page to get redirected to the Device Code page, where you can insert your device codes.