I got the printer about 3 weeks ago. The first handful of prints went great without a glitch. But suddenly the print would just not start. The printer would start after reaching temp, then auto level and them stop with the BL probe blinking red. Sometimes restarting the computer and printer would resolve this, other times changing a setting would do it. Sometimes, nothing helps, like tonight! I am printing mostly via USB cable, but have tried printing via sd card. I have yet to get it to print using the sd card. I have even tried with Cura 4.4.1 and have had the same results. This happens when printing with PLA, PETG or Nylon. Any help would be appreciated.