What you describe really does seem more like an Internet service outage of some sort, especially with this happening to all of your cameras.
They do, and Wyze has acknowleged that Cam OG records to a different location on the microSD card if an outage lasts longer than 30 minutes, so that video is likely still on the card and available for you to retrieve it if it’s important to you:
Fellow Forum member @grapefruityoda has done some independent testing and reports that this issue affects other Wyze Cam models with certain firmware, as well:
I don’t know anything about your specific ISP or gateway, so I can’t give you a better answer at this time, but looking at Downdetector for Canada seems to indicate some spikes in outage reports over the last day:
That might be a good link to tuck away on your phone so that if you think you’re having an ISP issue, then you could still potentially check that site with a mobile data connection.