Has anyone had any experience with this error when transferring FB miles to the family leader? After confirming the transfer an error pops up saying, "Level-of-assurance too low to access this resource" When calling into flying blue they say its a known error and should be resolved in about 3 hours. I've transferred miles from this family member successfully before 4 times last year.

Sadly FB Support cannot transfer miles between members... you can only do it online.