Hello I'm using windows 10 x64 and I do not get the errors you do. I select unload filament and no issues. The same for loading filament no issues.
I just started a print job. At first the flux would connect and then lose the connection. This occurred several times. I ended the application and restarted twice, and finally able to print.
While I'm printing, the software loses connection and comes up with a timeout error. This occurred once so far.