I have contacted support. We'll see what they say.
Nevertheless, I give five stars because I this is my first tablet and I have not hoped for anyway the mentioned functionality. So far (after two days), I have found no problems.
[Update] response of the support with respect to the features "Users"
"... In principle, it is true that Android 4.2+ create, manage and support of various users.
However, the technical implementation of this functionality is not quite so simple, as Google likes to publish.
For this reason, our devices still support currently no user management.
Please note that this is quite usual in the market, and currently very few manufacturers have integrated this feature.
Of course, we are working on an integration.
Whether and when it will be possible for your model, we can not estimate at present unfortunately.
About the ODYS Update app but you will be kept informed. ... "
[Update] warranty
After a few weeks of work I could notice the following problem: Approximately in the middle of the display sometimes results in a range of black and yellow than normal when the device is switched off device - yellow border and some yellow spots - is. The size of this area is not constant and grows or shrinks. The problem arises apparently while moving the treadmill. After prolonged operation (eg ebook-reading) of the area will disappear completely. However, it can take several days until it is so far. More so far I could not find and I fear that the display is faulty. I put a warranty claim and the instrument is offered.
[Update] warranty
The unit has been repaired, "There was in this case, a contact problem between the panel and the motherboard, which has been corrected."
[Update] exchanged device
The repair was unsuccessful. The problem was still. The manufacturer has offered a repair again but almost one month processing time was too long. The equipment has been replaced by Amazon (thank you!).
[Update, May 2015]
The problem (s. Above) resurfaces. Could condensation. Amazon has the device to be withdrawn (no exchange is possible because the model no longer available) and refunded the cost. Thanks!
