BlockImporter is a Maple toolbox that reads a Simulink .mdl file, along with initializations in an .m file (Matlab code). The model equations are extracted, simplified (in an optional step) and can be fed into Maple's DynamicSystems package. There are some restrictions on the set of supported Simulink blocks, however; also linked from the page you already found.
Its builtin documentation is available here.
It certainly supports Windows 10 - what made you think otherwise?
There is no equivalent in MapleSim, although its Simulink connector toolbox (covering the opposite direction) can re-import Simulink parameters to update your plant model - a kind of co-simulation where the controller is typically modelled in Simulink.