I do use (actualy) :
* Windows 7
* Thunderbird 38.4
* Birdiesync (notebook) 3.0.0.5
* Birdiesync (IPhone) 3.0.0.4
* BirdieSyncServer 3.x
Sometimes (!) synconization works fine.

Mostly I do get the message on my IPHONE "Incompatible BirdieSync Server" and nothing works.
Important information: I didn't change anything in the settings!
I do have this problem since 3.0

What is wrong?
What is the solution?
Thanks
Joerg