Weird behavior when try to add new device

Apps & Clients SmartThings (Samsung Connect)
#1

Hi , just got my new SmartThings Hub,
i had spare Door Windows sensor from a GoControl kit.
Trying to add it and using GoControl when i get to instruction to put the Battery On and press the switch for 1 sec the Hub already scanned and find one of my 3 Wemo devices all the time.
Notice that trying to add anything that i dont have get connected to one of my 3 Wemo switches all the time. The only thing so far that i had success is a Leviton plug switch.

Is it normal? In Wink if i add a specific device it wait forever for that device until i cancell.
Seem that SmartThings is scanning my network and add what ever it find.

#2

Just retry and this time was able to add my door contact but it did also add one off my Wemo switch. very annoying.