How can I stop the 100’s of Alert’s I am getting

Some good information first: A gateway is a device that routes traffic between two separate networks. The best example of a gateway within your home network is your router. This acts as a gateway between your own personal network and your broadband provider’s network.  
So when you receive an alert from your Fingbox that a new gateway has appeared on your network it means that a device has become a gateway. This could be something usual (e.g. some triband routers have an interchangeable pool of addresses that change a lot), or could be coming from a device which redirects everything to itself (e.g. a hardware firewall), or could be a device that has been attached to your network that you weren’t aware is redirecting all the data.  
Fingbox will alert you when it notices a new gateway so you can investigate if it is coming from a trusted or malicious source.  
 
When a new device joins a network, then it tends to distribute traffic through itself. If you do not know what the new gateway is, check to see if a new device has recently joined your network – this most likely will be the source of the new gateway. If it is a device you do not recognize then block it straight away.  

If you have multiple access points and if some devices are connected with both then you might find this gateway change alert. Even if the new device get connected to a different access point and Fingbox is connected to another access point, then Fingbox will detect it as some other access point is redirecting the traffic and thus giving you with an alert. I would like you to follow these steps: 

 1) Turn off the router/extenders and Fingbox 

2) Wait for a minute or two. 

3) Make the connection of Fingbox with the router directly if not done already. If you are using an extender/switch, then make the connection with it. 

4) Only Turn on the router and then wait for another minute or Two. 

5) Turn on the other network device like Switch/Extenders and then wait for a minute or two. 

6) Turn on the Fingbox and then re-install the Fing App after clearing up the cache as well. 

7) Sign in with the Fing App 

Let me know about these steps. 

As sometimes, it can be a false alarm as well. To make sure, Once Fingbox identifies and shows correct alerts you should take immediate action: 

• Turn off your WiFi network equipment for 15 minutes and wait. Make sure to turn off or disable WiFi from all client devices (like e.g. mobile phones, laptops, etc). Then restart networking and see if the same alert still appears.