Usage depleted overnight. All updates set during free time.

Same information over and over.  Videos do not run automatically on Facebook and I have a wifi password that is 24 characters long! Iphones do not connect without that password.  Why is there a difference in the MB's used on the Hugesnet meter and Glasswire.  I understand that Glasswire only says what is used on this computer, but still I can't download as fast as it was draining.  I do not have thermostats, refrigerators or tvs that connect to wifi.  Our computer habits have not changed.