Problems after latest update.

My power went off the other night and when it came back on, my iMac automatically updated. I have no clue what was updated but I did see a "notification" saying something wouldn't work with the new update. I didn't recognize what that something was, so I closed the box. (Wish I would have took a pic of it now) Anyway, I think I figured out what won't work. Ever since the update, my Wansview cameras keep crashing. They crash about every 20-30 minutes. Takes several minutes and then they reboot. I have the 1 Wansview cloud camera and 5 of the camera versions just before the cloud cameras came out. Both the older and newer cameras are crashing and they crash at the same time. They have 2 different apps that run them. With the Cloud camera I tried to delete the app and went to the Wansview website and reinstalled it. Still crashes.

What can I do to resolve this? I don't want to have to buy all new cameras, that can get expensive. I would try to undo the update, but I don't even know what it was exactly? Like I say the power went out and when the computer came back on, it automatically did the update (I have now turned that feature off). Unfortunately I can't go to a older date as my back ups quit working a long time ago. I did contact Wansview just before writing in here, so I am hoping between them and this site, something can be done to get my apps to work right again.

Thanks.

Mac is running Catalina 10.15.4 Unfortanalty my Mac is a 2013 model.