Assistance needed to recover Issues from Jira that are no longer showing

I was trying to get my head around how "boards" worked in Jira since none of them were showing my backlog of 50 or so issues that had not yet been completed. I had about that same number of issues that had been completed. When I deleted one of the boards that was empty, my backlog of 50+ issues completely vanished. I need someone that can help me recover them if possible. I think we will have to have a conversation with audio and screen-sharing in order to accomplish this which we can do in Teams fairly easily.

The rate is $2 if we solve the issue, even if it only takes 5 minutes.