try a factory reset, please follow Below steps.
- Power on the Huawei Router, place a paper clip or Pin into the hole on the back of the Router labeled Reset.
- Hold paper clip or pin down for 10 to 15 seconds and release.
- The Router will reboot on its own. Once the WLAN light stops blinking, the Router is reset.
- Please Note, Resetting the Huawei router does not reset the firmware to an earlier version. It will only change all settings back to factory defaults.