As far as the errors on my display goes, they are Error 08H, and Error 20H. You’ve never had these before? It might be my battery is bad, so if I could find somebody else with an Aostirmotor S17 bike, I could try their battery. I don’t know nobody here in the Kansas City area with One though. Where are you located? ha ha.
Unfortunately, in my area, no bike shop wants to look at a third-party electric bike to try and fix it. I got mine off Amazon, and that is my predicament. I got a broken bike, that nobody will even try to look at to fix it.