New version 4.4 is very buggy

Many times I have to start/quit/restart for Luban to connect to the printer when I try to print a file. It will ask me to verify connection of the printer (which I shouldn’t have to do) and sometimes it bypasses and starts OK, but other times just hangs there until I restart. Tonight it disconnected in the middle of a long 17 hour print (with error msg on the printer, with option to STOP printing and still printing) but my PC will not reconnect to the printer. And there is no option to try to reconnect (clicked pause and it just spins). Also, the Remaining Time never changes (counts down) from its initial estimate.