So... Yeah. Upon further investigating and research it's not possible using IDM or anything similar. DMM is utilizing DRM technology which isn't allowing me to download/ screen record. If there is a way to bypass the DRM it's completely secret and isn't shared anywhere online (from what I can see).
With that, DMM just released an update on their website saying certain videos will be removed and any purchase will be revoked issuing refunds in the form of DMM points. Which ones? They havent said... Anyways, I tried... Here a pic of Ichika. Enjoy.