Opening balance for bank reconciliation

I have recently come across from Sage, and when I carried out a bank reconciliation there was a $2 out of balance, which I established as occurring prior to the data migration. To attempt to locate it I undid the last bank reconciliation which wiped all previous, including the opening balance (which I believe was bought across as a journal entry 1/7/22).

My online bank statements only go back to 1/12/22, and all figures from that date to now are accurate, so I can only assume the $2 out of balance occurred prior. (I thought I had done reconciliations on Sage, but now I am doubting myself)

I think my best bet is to adjust the closing balance on the journal entry dated 30/6/22, but having mucked up multiple things since this transition, which I'm really struggling with, and I don't want to keep making it worse. Help!