I just got this yesterday, charged it up per the enclosed instructions. The first couple of times I tried to use it, once I shut it off it would not turn back on and the charging light flashed each time (after recharging the first time). And then I emailed customer service . (no answer yet, but it's a holiday weekend here in the US).
It turns out I was turning in on all wrong! The instructions say to "hold the power button for two seconds." But what you need to do is hold the power button till the light goes on, let go then use either the remote power button or the power button on the unit to turn on.
I also found out (not in the instructions either) that you can cycle through the massage patterns with the power button on the unit itself.
I get the feeling that the department writing the instructions must REALLY HATE the customer service team! LOL! Anyway, the customer service auto-reply e-mail gave me a chance to reply with what I just said.
If the instruction manual gets a rewrite - 5 Stars! I was gonna take off a star but after using Thor, all is forgiven.
Just use lots of lube, relax, don't push when things start getting painful, just again, relax! I'm a bit of a beginner, and this advise works!