Strap disengages from Fitbit

I like the look and fit of this band but after wearing several times the one strap keeps disengaging from the Fitbit. I have tried to correct but am unable to do so. I am afraid I will end up losing my Fitbit. My other straps properly connect so I am sure it something with this strap and not an overall issue. I would return but sadly my return window closed yesterday.

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