According to the Product Page, the poses for M5 are in DAZ Studio format (DSF), have you looked under DS Formats in the Content Library. The readme file also usually tells you where to find the installed items.
The readme points me to ◦People:Genesis:Poses:DM:StepsToEternity but there’s no such gallery. The only poses I find are those for M4 in the poser galleries. Runtime\Libraries\Pose\DM
That’s where the readme differs too, for some reason it talks about ◦Pose: “Prop:Vertical Living Repair Shop”. So perhaps the whole readme is wrong, and there never were any M5 poses to go with this product.