UltraNetatmo3 on Linux

I am trying to use your plugin in Linux HS3 but getting the following error.

Entered SelectPage() Function
pageName=UltraNetatmo3
Entered postBackProc() function.
oTabs=tabStatus
id=tabStatus
Entered Version() function.
Error getting response stream (Write: The authentication or decryption has failed.): SendFailure
Entered SelectPage() Function
pageName=UltraNetatmo3
Entered postBackProc() function.
id=timer
Entered SelectPage() Function
pageName=UltraNetatmo3
Entered postBackProc() function.
id=timer

The username and password are correct.