Though touching "OK" on "Attach vertical stitch alignment foot and edge sewing sheet" window, the same window still appears.

Something possibly your hand was put on or moved closer to the needle plate until "Recognizing ..." message disappears after touching "OK".
	Built-in camera cannot detect edge sewing sheet correctly if edge sewing sheet is covered by something including your hands while detecting edge sewing sheet.
	Clear edge sewing sheet and touch "OK". Do not move anything closer to the needle plate until "Recognizing ..." message disappears.
	After pressing (OK Key), do not place your hands or any other object near the needle plate until the message "Recognizing..." disappears.
Edge sewing sheet is not placed on the needle plate or misplaced.
	Place edge sewing sheet correctly.
	Refer to "How do I place edge sewing sheet?" about how to place edge sewing sheet.

FAQs & Troubleshooting