@mirdanhel I’m afraid you’ve misread or misunderstood what two devices this guide is for also possibly under researched the FunSR1 2.0 before purchasing so you felt you knew how to use it fully.
This guide is not for SSR1 type devices (which is the FunSR1 just an modified version based on it) it is instead for OSR2 and SR6 type devices as both are extremely similar software and function wise and was possible for myself to personally test the method on my SR6. (I haven’t checked this method for a while nor updated my Intiface Central so I don’t know if this guide is valid still anymore as well)
On the FunSR1 2.0 topic post I can’t see anything mentioning Bluetooth in it’s description though there’s posts talking about it having it. Additionally on Buttplug’s index of supported devices it lists it as only supported via USB. (though it doesn’t specifically have the FUN version of it)
Not all hope is lost as other’s have had problems in the past so I would suggest searching on this site as I found this result but it was for Windows instead of Android. So I’m afraid this is something you should contact the FUN team about via their Discord or send @renwoxing an message.
Contacting qdot I don’t believe would be much help at all as they didn’t sell you the product additionally they said an bunch about supporting devices and such in this prior post above:
They also spoke more at length a few posts later, mentioning the FunSSR1.