The disc is a bit poor for not letting you choose DD or DTS through the DVD-Audio interface. And the player looks like it's a bit poor for not letting you access the DVD-Video version. The combination of those two looks like it's scuppered you from ever getting DD/DTS. But on the other hand, you have the multichannel interconnects set up, so you're ready to access the best quality DVD-Audio MLP version anyway.
As for the lack of bass, you will probably need to turn up the trim on your receiver's multichannel subwoofer input by 10 to 15dB. What receiver do you have? Does it have a separate setting for this? The Love disc shouldn't be any different from other discs hooked up this way; it's actually the nature of the multichannel analogue interface generally; the subwoofer channel is transmitted low to fit in high LFE peaks and redirected bass. It's the receiver's job to boost it.
A good receiver will have separate trims for multichannel analogue input, or will have a specific function to turn up the subwoofer input, for this reason. If you don't have this, then there are two choices:
1) turn up your receiver's global subwoofer output trim, but only when using the multichannel interface.
2) adjust the player's output trims; turn down the other channels and turn up the subwoofer channel.
Ah, by the way if you're using the multichannel inputs to your receiver, then all the calibration and bass management will almost certainly be bypassed. You need to set that up in the player - level adjustments and speaker distances/sizes. (Those player settings only apply to its multichannel analogue outputs).