I expect coinjar is not a wallet, it is an account - more like a bank account.

Anyway use this to find the transaction ID then post the transaction ID here in this thread.

https://support.coinjar.com/hc/en-us/articles/204770485-Finding-a-bitcoin-transaction-ID-TXID-

In other words, use the "contact support" link since they do not tell you how to find the transaction ID from their (very weak) software.