Hi,
I have your SkyBT telescope controller, purchased online last August directly from Simulation Curriculum. I never got around to trying it out until yesterday. I can get a blutooth connection with my tablet running Android 6.0.1, but not my cellphone Nexus 5X running Android 8.1.0, nor my old cellphone a Samsung Galaxy S2 running Android 4.1.2. I want to be able to use the cellphones, not the tablet. Because it works with the tablet, I know its not a problem with the telescope or the cable. The SkyBT appears to pair with the cellphones, but they will not connect via bluetooth. I have no problem getting the cellphones to connect via bluetooth with other devices, they just won't connect to the SkyBT.
Please help.
Also, while I have you attention, your web page https://www.skysafariastronomy.com/support/index.html has a link to a Yahoo group. The link does not work, perhaps you should fix it?
Thanks,
Don