Blueduino rev2 connection rejected

i tried to connect my blueduino rev2 to an android device (samsung galaxy s7, i have installed the bluo app), but it keeps saying that the connection is rejected. but when i tried with an iPhone 6S and that did work. anybody have an idea how i can solve the problem with android? thanks!

Please check the firmware version with the AT command


We’ll test it with Android at our side

i get version OK+VERS:2.2.3
if i command AT+ROLE? i get OK+ROLE:0

We tested with Nexus 5 and app bluo and it works fine. Can you try with other android device?

we’ve tried with OnePlus 3 and OnePlus 2 but they both didn’t work…

Did you add password and change auth mode for BlueDuino?