RESOLVED - Notebooks don't connect to Prey server

Out of three devices only one (an android phone) connects to the Prey server; the other two (notebooks running windows 10) have not connected for about 3 months. The log reads every time:

PREY 1.8.1 spreads its wings!
Current time: Tue Nov 06 2018 15:31:04 GMT+0100 (Mitteleuropäische Zeit)
Running with PID 10520 as LAPTOP_NOT1T3FF_ over Node.js v4.5.0 on a ia32 windows system (10.0.17134)

 warn Tue, 06 Nov 2018 14:31:04 GMT [control-panel] Not configured. Waiting for user input...
 info Tue, 06 Nov 2018 14:31:14 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:31:24 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:31:34 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:31:44 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:31:54 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:32:04 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:32:14 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:32:24 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:32:34 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:32:44 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:32:54 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:33:04 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:33:14 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:33:24 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:33:34 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:33:44 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:33:54 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:34:04 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:34:15 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:34:25 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:34:35 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:34:45 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:34:55 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:35:05 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:35:15 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:35:25 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:35:35 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:35:45 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:35:55 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:36:05 GMT [control-panel] Reloading config...
 info Tue, 06 Nov 2018 14:36:15 GMT [control-panel] Reloading config...

critical Tue, 06 Nov 2018 14:36:15 GMT UNCAUGHT EXCEPTION: Not configured. Stopping.
info Tue, 06 Nov 2018 14:36:19 GMT Gracefully shutting down. Will self-destruct in 5 secs.
info Tue, 06 Nov 2018 14:36:19 GMT [hooks] Unregistering hooks.
info Tue, 06 Nov 2018 14:36:24 GMT Time’s up, shutdown forced. Have a jolly good day sir.

What is wrong, what can I do?
Ralf

Hi @Ralf_Lehmann,
Your devices aren’t linked with your prey account, to configure them you have to enter your credentials after running this command as admin:
C:\Windows\Prey\current\bin\prey config panel
or
C:\Windows\Prey\current\bin\prey config gui -f

Regards,
Javo

Thank you @javo,
it worked after deleting the 2 devices!
Grateful regards,
Ralf