Zemalia Werner device can't be found

The device is listed as buttplug.io compatible, but neither my PC nor my phone lists it while scanning. Am I missing something here?

It “should” appear as a Svakom Iker.
But Bluetooth 4 on PCs can be tricky; take a look at the Bluetooth FAQ General Bluetooth Device Questions | Buttplug and Intiface FAQ (note that Amazon has changed products out under the guide, so if you’re going to buy a new adapter, I’d recommend a TP-Link UB4A or UB400)