Keeps logging out with "Session is invalid!"

[unbash]

Hey guys,
Honorbuddy keeps disconnecting and giving me "Session is invalid!" and I get the login screen again, in which I have to login.
Is there a way to make it automatically log in back when I get this error? Or is there a way to prevent it?

 

[unbash]

And now it doesn't login at all.

 

[Tony]

add an exception in your firewall about Hb

 

[unbash]

add an exception in your firewall about Hb

I'm not using any firewalls. I even disabled Windows Firewall.

 

[Tony]

enable it and add the exception
also make sure that port 5031 is open(router)