Page 24 of the manual for Pause and Resume. Push and hold 3 seconds for Guest User. Page 39 tells you 'PAUSED' is because you stopped pedaling for 5 seconds.
to Reset the machine, unplug it from the mains for at least 3 minutes. Page 39.
https://download.nautilus.com/supportdocs/AM_OM/Schwinn/SCH_250.MY12.AM.OM.EN.pdf
If you want to find words in the Manual, press CTRL+F and type the word in the box.