I only needs 3 confirmations to show up to your lightning wallet, have you tried to refresh the wallet by "
pulling-it-down" the screen?
Also, have you replaced the bitcoin address that showed up in the Send window during refill?
It should be the same address that'll show up in "
Refill with External Wallet", go check it out and see if the refill transaction's output is the same.
If it is, then it's an issue with Blue's system since their Lightning Wallet is actually custodial.
In that case, try to contact their support (
link) regarding the refill issue.