So my 2021 Cforce 600 Touring started getting a little hard to start as the motor wouldn't turn over so I replaced the battery, and it started a few times and didn't a few times, and then it wouldn't start at all, just clicked when depressing the start button.  When I turned the ignition lock switch the lights would flicker, and after trying to debug the issue the bike does nothing now, except for a few weird power things.

I saw a video about the starter relay & fuse module melting (https://www.youtube.com/watch?v=M20Jjci3bU4&t=68s) so I checked that and the 30A fuse was pooched and the connector was slightly melted, so I replaced the 30A fuse.  Now it basically does nothing, I can't see, hear, do anything - no fuel pump sound, no horn, nothing.

Voltage at the Light/Control_Signal/DC_Outlet dropped very low when the ignition switch was turned on, so I pulled those 3 fuses and the 12.8V at the battery only dropped to 12.56 at the ignition key switched 12V side of the pulled fuses, which seems like is a big drop with no load. 
When I inserted the Lights fuse or the Control_signal fuse the voltage at the fuse drops to a couple volts .
Note that when I connect up a battery the display toggles on and then off again, so it looks like the display is active.

From the schematic in the shop manual (I ordered one from CFmoto USA as CFmoto Canada doesn't sell them) the ignition key switches power to the three aforementioned fuses and the EPS module.
When I insert either the Lights fuse or the Control_signal fuse the voltage at the fuse drops to a couple volts, the voltage at the battery remains 12.8V  (the DC outlet fuse does nothing as there's no load on it).
I disconnected the EPS module and the Song Remains The Same (song quote for us old buggers).

Help please! 
Thanks
  John

So my 2021 Cforce 600 Touring started getting a little hard to start as the motor wouldn't turn over so I replaced the battery, and it started a few times and didn't a few times, and then it wouldn't start at all, just clicked when depressing the start button.  When I turned the ignition lock switch the lights would flicker, and after trying to debug the issue the bike does nothing now, except for a few weird power things.

I saw a video about the starter relay & fuse module melting (https://www.youtube.com/watch?v=M20Jjci3bU4&t=68s) so I checked that and the 30A fuse was pooched and the connector was slightly melted, so I replaced the 30A fuse.  Now it basically does nothing, I can't see, hear, do anything - no fuel pump sound, no horn, nothing.

Voltage at the Light/Control_Signal/DC_Outlet dropped very low when the ignition switch was turned on, so I pulled those 3 fuses and the 12.8V at the battery only dropped to 12.56 at the ignition key switched 12V side of the pulled fuses, which seems like is a big drop with no load. 
When I inserted the Lights fuse or the Control_signal fuse the voltage at the fuse drops to a couple volts .
Note that when I connect up a battery the display toggles on and then off again, so it looks like the display is active.

From the schematic in the shop manual (I ordered one from CFmoto USA as CFmoto Canada doesn't sell them) the ignition key switches power to the three aforementioned fuses and the EPS module.
When I insert either the Lights fuse or the Control_signal fuse the voltage at the fuse drops to a couple volts, the voltage at the battery remains 12.8V  (the DC outlet fuse does nothing as there's no load on it).
I disconnected the EPS module and the Song Remains The Same (song quote for us old buggers).

Help please! 
Thanks
  John

Did you ever track your issue down? I'm going through the same thing but all of my connectors, fuse holders, relay boxes look fine.