First you said "100 watt" that's about 10 Amp hour
Or did you mean 100 amp hour.. Ok.
Item 1: Unless you upgraded the conveter to an LI they never hit full so you don't have the full 200 AH (I'm assuming 200 ah total) You might have 180-190 but even to get there takes 6-8 hours of generator time or more depending on your converter.
Next that Refrigerator is likely around 200 watts running 100-150 average. Divide by 10 or 12 volt power consumption so it's 10-15 amps.. You only have woo
The sat receiver may well draw as 30-70 100 watts (3-10 amps)
We are now up to around 25 amps draw You only have 200 amp hours and I've not yet added in the CPAP (those can draw a bit of power if humidified. and that's the best kind) so you are below 8 hours at full charge.. and you were not likely at full charge.