AnywhereUSB/14 stops working

After installation of new firmware 1.97 the AnywhereUSB/14 stops working after about 7 days. No IP connection can be established to the AnywhereUSB/14. Then we disconnect the power cable. After reboot all if fine for about 7 days. What can caused that Problem.

Is it possible to get an older firmware or is there a possibility to have a log file. I don’t have seen a console port Connection. Perhaps there are any more Information?

Best regards