New Fitbit Flex won't pair using iPhone XS

[Caytayattr]

I just purchased a Fitbit flex. I have the most up to date software on my phone and downloaded the Fitbit app. I created a new account and every time I attempt to pair my phone and the Fitbit it is unable to find the Fitbit. I have tried uninstalling the app, restarting my phone, turning Bluetooth off and back on, plugging the Fitbit into the charger to pair, etc. I can not figure out why it won’t pair. Is this a defective Fitbit Flex? 
very disappointed so far. 

Moderator edit: subject for clarity 

[Odyssey13]

Hi @Caytayattr  the Flex was retired a few years ago. Where did you get it? Is it blinking lights at you or showing signs of life?

[Caytayattr]

So I live in the Cayman Islands. It was for sale at one of our stores like cost co. 
could this be the reason it doesn’t work? 

[Caytayattr]

It does light up. I charged it fully when I purchased it. It does show lights when it’s double tapped. 
I believe it shows all five lights then goes to one blinking a few times before they disappear. 

[Odyssey13]

I'm not sure if where you live makes a difference, but where you get it might @Caytayattr . While it uses bluetooth, it doesn't pair with it. It actually pairs to the email address you've set up your account. Which phone do you have and is it on the list of compatible devices? click to see

[Caytayattr]

I actually got it set up this morning finally. I set it up via my computer and it’s worked since. 

[Odyssey13]

Wonderful news @Caytayattr  and thanks for letting us know. May you and your Flex walk many miles together!