When the device fails to be added, the password input error is also very likely. You can check from the following aspects:
1. Currently, the app supports password formats: numbers, letters, special symbols, and other special languages, such as Arabic and Spanish, are supported, while Chinese characters are not currently supported. The length of the password should be controlled within 58 bits.
2. You need to confirm whether there are spaces in the password, for example, there are many wrong spaces at the end;
3. You need to confirm whether the first letter of the password is capitalized, because the default initial letter of the input method is capitalized, but the actual router password is not capitalized. "