You might wanna reset all the transactions from your wallet and resynchronize it.
How can I do that ?
Start Bitcoin Core with the command line switch -zapwallettxs to remove the transaction from local storage. The blockchain will subsequently be rescanned for all txns related to your wallet, and you will be able to continue using your wallet. You only need to run it with -zapwallettxs once.
I opened the terminal and did : open /Applications/bitcoin-qt.app --args zapwallettxes
It did opened but nothing changed.