It may be a limitation of your router or many other variables. Here is a list of things that commonly contribute to connectivity problems:
You might be able to get that camera to work by rebooting your router then trying again, though it is possible that a different device will instead have issues after that if they are competing for limited resources. Usually the culprit is one of the items in that list though. In my experience, when they’re all addressed, most people have few connectivity problems after that. I hope you’re able to test some of them and see if it helps improve things in some way to have a better experience.