How do you use the printer, on the face of the printer, to enter numbers and letters, to put the password for the router wifi can not go from number 1- 2 3-4 5-6 7-8 9-0 ?

When entering numbers must first press the box on the screen showing "123" (similar to smartphone) once you see 1-2, 3-4, etc. you must "tap tap tap" each square (similar to morse code) until the number you want from that square appears on the screen.
For 1 (tap)
For 2 (tap tap)
For 3 (tap)
For 4 (tap tap)
For 5 (tap)
For 6 (tap tap)