Windows is blocking silent USB print to TM-T88V.
Serial/COM will stay empty for this Epson (normal).
Fix: install WinUSB with Zadig for interface of Epson TM-T88V → unplug/replug USB → click USB → select TM-T88V.
Then Get My Number prints directly with no Chrome print dialog.
System Print always shows the Chrome dialog — avoid it if you want direct print.