Hi BE, welcome to the forum!
In AD2, you should be able to go to the settings and choose a default mapping. There's one for the DM10 which likely maps most triggers but you may need to have it "learn" any others (I have the DM10X which has an extra tom and crash, if I recall, so had to learn the two extras but after that it's good). The manual for AD2 is online so check it for more clear info. I love Addictive, can't play the module straight anymore
As for the mesh, definitely can replace them but check if your foam cylinders under the pad are glued, you may need to gently pry them off the mesh as you remove the old one. Loads of discussion on that here, use the Search option (in the menu above, not from the Google search up in the top right). Best of luck!