I can't get the static IPs to take in my UTM

You can't add IPs to a UTM interface like that.  Add the first to the interface, then setup the remaining ones on the Additional Addresses Tab.

Sorry for the delay.  I have a block of three IPs.  I plugged one of those IPs into the UTM interface and changed the network to /29 and saved it.  I left Default GW checked.  It then placed the interface into a down status and it won't "reconnect".  Looking at the interface, it shows the wrong default GW.  There doesn't seem to be a place for me to enter the GW that I need.  That's why I tried the static route.  I've entered statics on different UTMs before as an MSP but this is the first time I have tried to use Sophos to do that.  All of the other ones have IP Address, Subnet mask, and Default GW>  Sophos has IP address and subnet which is why I'm pretty confused about this.  After I tried that, I tried entering the GW that I received as the external WAN IP address and it still isn't working.

1)  Add as an /32, which is the correct CIDR notation for a single IPv4 IP.  Not strictly necessary, but it is the correct way of doing things.

2)  Is the interface Type Ethernet or Ethernet Static (depending on version)?  Once you put a checkmark in the Default GW checkbox, a text input box should appear, allowing you to add the ISPs default GW IP.  Do not put the ISP GW address as the address of your external interface.

1)  Add as an /32, which is the correct CIDR notation for a single IPv4 IP.  Not strictly necessary, but it is the correct way of doing things.

2)  Is the interface Type Ethernet or Ethernet Static (depending on version)?  Once you put a checkmark in the Default GW checkbox, a text input box should appear, allowing you to add the ISPs default GW IP.  Do not put the ISP GW address as the address of your external interface.