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A couple of thoughts
Is the Blaze
Have you tried a restart of both the Blaze and the phone?
Check the troubleshooting guide out.
Best AnswerI don't think it would have anything to do with a Fitbit on a second account, and already having a Fitbit on the account is the point of being able to add a second one.
One thought would be is to turn of the BT on every device bit one, in the area that you have had our tried to connect this tracker to. Now use just the one with BT turned on to connect.
Restart the tracker and turn off+ on the phone/tablet, I'm not saying this is necessary but it will make sure to remove anything that might else try to interfere with the process.
It is possible that the limitation of a BT receiver is only able to connect to one host at a time is the problem.
Best Answer