CAN SOLVE ME APROBLEM OF AUTHENICATION PRPBLEM FOR WIFI CONNECTION FOR HAWEI Y300

The DVR will only work properly with Ethernet or Wifi

so contact the maker , and we are not HUAWIE, is.
we be USA

where are you,? unstated, and support from the maker
varies by locations on earth.

USA support is here, ask them, to unlock any phone, if even legal.
https://consumer.huawei.com/us/support/

Try tto change wifi password and reboot ur modem

Password is entered incorrectly ,reset the router or enter your router menu to change and edit password ,if you go call your Internet provider to guide you to resolve your problem.

Try this:
https://www.youtube.com/watch?v=-q5ktSTi7m4

Check that you have a good wifi connection (or at least decent 3G/4G), and make sure you have updated the app.

No I connect by Ethernet cable and still want connect

Try downloading malwarebytes it is free and will do a great job cleaning out your computer. Below is a secure website that will be completely safe to download it from.
https://www.malwarebytes.org/

If you don't want to do that try deleting the cache, cookies, and browsing history on your browser.

Authentication error means that the password you are entering to connect to the wifi is incorrect.

Hope that helps!

Check the DNS numbers you have in your network configuration under TCP/IP. Can you ping google? Go to the START button, then RUN and type in CMD and hit enter. A dos prompt window will open (black screen with text and the cursor will be blinking). Type in - ping www.google.com - and hit enter. It should come back with times it takes to ping google. If it comes back not finding google then you're not connecting to the webserver... need right dns numbers.