Well, it's a bit ridiculous, u know what, u say the transaction has confirmed already,with 3000++ confirmation,but why its still not appear on your wallet.
There just a 2 possibilities.
1. Your wallet is out of sync
2. You put a wrong address
I dont think there have a system error.
I used to have Digibyte they are fast to confirmed if the wallet is correct and the wallet is sync and the explorer shows confirmed then there is something wrong on the chain and this should be addressed by the Digibyte team, check if you have similar issues, this is a great concern for the team update us if you have fixed the issue.