So many, many things can impact Wi-Fi. Looks at this video for example: https://www.youtube.com/watch?v=49JBYSv3Nig
Also, positioning your device right next to the ASIAIR is also not a good thing, as the way the WiFi signal works means you'd want the device some distance away from the ASIAIR.
The thing you have to remember is that the ASIAIR is not a very high powered device and as such the Wi-Fi on it won't be the strongest (hence it being impacted by the types of material it is passing through, the saturation of other Wi-Fi signals in your area, how you are mounting the ASIAIR itself, etc etc).
Interestingly, mounting your ASIAIR on your OTA/Telescope can often be a cause for issues, as this makes the antenna constantly move around and potentially be impacted by the thermals and material of the OTA/Telescope itself. Better off mounting the ASIAIR to the tripod (I have mine on the tripod accessory tray/spreader of my HEQ5 Pro mount).
You also have to remember that the device your are using to connect to the ASIAIR Wi-Fi will always look for the strongest Wi-Fi signal that allows it connect to the Internet unless you explicitly tell it not to.
This is why it is important, the first time you connect to the ASIAIR Wi-Fi, you make sure you select the option to stay connected to the ASIAIR Wi-Fi.
You can, of course, also choose to forget all other Wi-Fi networks that your device has remembered so it can only connect to the ASIAIR Wi-Fi. This could also mean turning off Mobile Data as well if your device has a SIM/eSIM.
You will always have a better time of things if - at least with the ASIAIR Plus and ASIAIR Pro - you connect your ASIAIR to a Travel Router (such as the GL.iNET MT-3000) via an Ethernet cable. A small travel router is much better at providing Wi-Fi than the ASIAIR is and can handle Wi-Fi saturation/interference much better.