You mentioned you really want to talk to an employee on the phone and that you are in Canada.
I believe the Phone number to Wyze support for Canada is (581) 500-1166
Phone support is available 6:00 am - 6:00 pm PT Monday through Friday, and 8 am - 4pm PT Saturday and Sunday.
Wyze is taking this seriously. As you can see in the link posted above, Wyze made an announcement about this issue. The issue happened for roughly 30 minutes on 9/8/23 before Wyze took the Webview offline and fixed it. As stated in the above link, this was caused by a “caching error” for a select group of people who were using the Webview during that 30 minute window. As I understand it, it did not give control over other people’s live-view or settings, but it did allow users to see some other accounts’ browser “Cache” of the webview, including thumbnail images of the cameras, etc. One of the cofounders is quoted as explaining that they believe this affected 10 user accounts before it was caught and taken offline and fixed. Once the issue was fixed, they posted a public announcement about what happened, the cause, that they fixed it, and then they brought everything back online as soon as it was confirmed secure again.
I am not a Wyze employee and I don’t speak for or represent Wyze. I am wondering what more videos and screenshots will do for them though since they already know about and already fixed the issue the same day it occurred. If you still want to ensure they have a copy of the issue from before they fixed it, then I would recommend attaching it as an email reply to the email support ticket you already started. If you really want someone to speak to over the phone, you may call the above number for Canada during business hours and you will talk to a Wyze Employee.
The above link has Wyze’s official response to this issue you experienced, but here it is quoted in full, for your convenience:
Again, if there are further security concerns, it’s often best to use the email security@wyze.com since that’s where they conduct all security investigations and to make sure there is always a full log of every detail. You can email the recordings there, directly to the security team. But Wyze does offer the ability to talk to someone on the phone at the number I posted. I expect they are likely to repeat the official response, about it being caused by a caching issue and that it is now fixed, and/or refer you to the security team by email for further security concerns, but it is always an option to talk on the phone if that is important. 
Hopefully that helps to clarify.