My Handbase setup was syncing seamlessly till I just changed devices from Galaxy S9+ to Pixel 2 XL, moving from Android 8 to Android 9 (Pie).
I have successfully moved databases from old device to new device by opening each file in old device folder (on desktop), clicking "save as" then selecting new device's folder to save it into, then syncing.
But the databases are failing to sync any changes in either direction. The log gives a stream of "Error: Code 200: HTTP/1.0 200 OK" messages.
I suspect there is an issue with Android Pie but would welcome any input please. I use the software a great deal and don't know how I'll get by without being able to sync!