Hello, this is my first post (but I am long time reader of the forum :D) so welcome everybody. I recently bought Micro GT (with osram led) and I tried to use it with purple efest 14500 imr 6.5A unprotected cell, flat top. When I screw down tail cap it gives 2 blinks (so connection is good?) but after that it is non responding to any clicks - I tried 1x short, 4x short (to unlock), 1x long, 1x extra long 16s, several short ones… Nothing happens any ideas what’s wrong? Maybe I need to use different cell?

Edit : after many tries it finally turned on but then again I needed to press several times and it turned off, looks like button switch is not making contact when I press for most times. Is that hardware problem and I should return it / send for warranty or is there a way to easily fix that?