I'm going to copy and paste this reply to everyone who is asking...

I thought I understood the minibits backup procedure. I did not... I had a fairly substantial amount of sats built up as I accepted a few chunky payments for various things. And the recovery process only found less than half my sats... And I'm kinda gutted.... 😅

It's my fault. It's not the end of the world. I'm just... Resigned to having lost them. 😔