Hello, the extruder motor on my printer will not work (FLSun Prusa i3). I've switched the connection with the X motor, and it works fine, so it's not a motor issue. I've also updated the driver and have tried extruding once heated up. It sure seems like the board is just faulty, so they're sending me a new one. But it's coming from china and most places are on lockdown so it could be weeks to months before i get it in the mail. Has anyone had this issue? Is it really a faulty board? Does anyone where if I can find a Robin Mini board in North America?