A. To avoid sizing issues, always refer to the size chart provided on the app. Measure your foot length in centimeters or inches and compare it to the size chart to find your correct size. If the app does not provide a size chart, search online for the specific brand's size conversion guide.
B. Consider ordering a half size up or down based on customer reviews regarding fit. Many users share their experiences with sizing, which can help you make a more informed decision.