Trying to follow this... Based on your Xlights Layout Picture, your Flood Lights are assigned to Starting Channels 1,4,7,10,13...
So then once you export the .fseq out of Xlights to FPP, FPP is using those channels numbers to turn on your Floods. So in FPP, with your Start channel starting at 1651, you will never see your flood lights work... you need to have FPP turn on your Flood Light channels, 1,4,7,10,13.
There's still some other configuration stuff going on with your controller and also the Xlights Setup page compared to your FPP page that's not quite right... but I'd need to figure out your whole setup first to point you in the right direction...
Does that make sense?