Difficulties to set up a replacement

[IJM50]

I have two Samsung Sung S8's one a standard the other a plus both of which could 'talk' to my Blaze, which is a replacement as the first kept loosing it's charge. I am now in a position where by neither can pair with the Blaze, the S8+ says it can see the Blaze but in settings there is not Classic Mode so it will not pair the other Samsun S8 cannot find the blaze at all. 

I have turned both phones on and off and left them off over night, I have done the same with the blaze. I have unpaired the Blazes to see if that would help but as you can see from comments above the phones cannot see them. I have not tried a factory reset of the Blaze as of yet nor have I removed the apps from my phone. I am prepared to try both of these but I do not hold out for much success.

Any suggestions?

Moderator edit: updated subject for clarity

[EdsonFitbit]

Welcome to the Fitbit Community @IJM50. Sorry for the delayed response.

I regret to hear that you are having difficulties to set up your Fitbit Blaze. Thank you for the information provided and for the troubleshooting steps you performed before contacting us. I noticed that you have been in touch with Customer Support. I'm pretty sure they will do their best to provide assistance as soon as possible.

If you have any question, please don't hesitate to contact us back at any time.