Once the connection was fixed they all just seemed to go for it.
I wondered if you had lots of iOS devices. They will flood WiFi as soon as it is available if they think they are out of date on automatic back ups.
I found this out when using a hotspot device when roaming in the US, the iOS automatic backup thinks all WiFi is unmetered and used up all the allowance in one evening. Oops!
80/20 (2/jun/14) at 470m - Sync history highest: 64/9 (Sep/17), 54/6 (Jan/19), 51/6 (Mar/19)
20 years of broadband from 1999's ntl:cable modem trial - Live BQM