Aurora Mobile's Q1 FY23 revenue decline of 23% YoY is a negative signal for investors, as it indicates a slowdown in the company's growth. The mixed segment performance, with Developer Services revenue down 24% and Subscription Services up 9%, shows that the company is facing challenges in some areas. The expanded gross margin of 70.3% is a positive sign, but the adjusted EPS loss of $(0.01) and adjusted EBITDA loss of $(1.1) million indicate that the company is still struggling financially. As a result, the stock traded lower by 4.3% premarket, reflecting investor concerns about the company's performance.