I just received a Dovo razor from straight razor designs and it doesn't shave. It was supposed to be received shave ready but does not cut hair. It has no problems cutting paper, however it won't cut mine or my girlfriends hair, facial or otherwise.

Now being my first time attempting with a straight coming from double edged safety razor for years, I thought I may be doing it incorrectly and asked my beautician friend to show me how as she was actually shown how to shave professionally and does so occasionally at work. She was unsuccessful with my razor but with hers she was fine shaving me.

I made sure to wipe the oil off the razor and we both stropped several times wroth the leather/mesh strop that came with it.

This was a relatively pricey purchase and just want to make sure if there's a way to test and see if it's a possibly defective blade, or is this a common issue from purchases at straight razor design? I heard only good things about them and that's why I went with them. Any help is greatly appreciated, as I would like to be able to start straight razor shaving.