Hello,
Transaction: https://horizon.stellar.org/operations/62709292775510017
The payment was made through a "merge_account" operation - this operation is not supported by bittrex and most exchanges, that's why there is a message to warn about this:
https://imgur.com/imSw6Oj.png
So that's not a blackwallet issue. To solve that, you can contact bittrex and tell them that you sent your lumens through a merge_account op instead of a payment op.
As your transaction has a memo, it should be fine:
"memo_type": "text",
"memo": "dd5669dc8d0a474486c",
Hope it helps!
