Why can't I connect to wifi?

The steps to connect the printer are as follows:
1. Confirm the product model you purchased. The DHP513 photo printer needs to be connected to a power source, and the DHP512 photo printer needs to be fully charged.
2. Power on
• Press the power button to turn on the printer.
• The power indicator lights up white, and the Wi-Fi hotspot indicator starts blinking orange after about 10 seconds, then lights up orange.
• The printer has entered an idle state.
3. Connect device Wi-Fi
• Turn on a WLAN connection on your smartphone, tablet, computer, etc. and select "Liene Photo Printer [xxxx]". • The default connection password is 12345678.
• When the Wi-Fi hotspot light turns blue, it means at least 1 device is connected successfully.
4. Follow the app's instructions.