I bought the 3 sensor setup with the WiFi gateway in April, 2023. After posting the above comment, I bought an additional 3 sensors. Unfortunately, the WiFi gateway failed last Thursday (9/5), is out of warranty and Govee doesn't sell just the gateway. I have no desire to buy 3 more sensors just to get another gateway. Fortunately, the sensors I have continue to work via Bluetooth so I'm not completely lost. It was nice being able to check them remotely through the gateway, but not essential.
Since it only lasted 17 months and can't be replaced without buying more sensors, I don't think I feel comfortable recommending the gateway kit anymore. I have a multitude of other Govee sensors and even bought some smart outlets and have no issues with those products.
I would edit the original post to add this comment, but apparently the system won't allow editing of an older post. If a moderator sees this and can add the above statement as an edit to my original post, that would be great.