Mail still not reliable since the snow

My mail still isn’t back to normal since the snow. We shoveled immediately after the storm, and there are no safety issues with the carrier reaching our box. I checked my cameras and could only see the carrier on our street every other day, at best.

I also have informed delivery set up, so I get an email with pictures of all the mail pieces arriving that day. I’m still missing two from 2/3 and 2/5, a speed camera ticket and a wedding invitation. I figured out how to pay the ticket without the notice, but I’d love to actually get the wedding invitation. Checked next door and no one received it accidentally.

I went to my local post office on Friday and they were no help. They claim all mail was delivered for me and there’s nothing they can do. What else am I supposed to do?