I believe it is the use of digital co-ax cable that is hindering MQA handoff. My SMSL has the same issue from my node 2i…it does not unfold MQA via co-ax or optic. I think you may need to use an I2S / hdmi cable to hand over the MQA to D70s. At least that what I see reading Toppings product page.
https://apos.audio/products/topping-d70s-dac
https://apos.audio/products/topping-d70s-dac