None of those transactions are in my history. Only a few smaller transactions I made several years ago are there.
Did you make those smaller transactions to the same address or to a new address? And didn't you check your Trezor after those transactions?
I checked Kano for my reward history and it is just over .4 BTC like I remembered. Where did it go?
I assume Kano shows which address it went to. You can check it in a block explorer.
The thing that gets me is there is no way I would have mined all that without checking my wallet to see the balance.
So it should still be there. Do you have the seed words for your Trezor?
Since I updated the firmware it gave me a new address.
That's normal: you should use a new address for privacy. But the old addresses should still be there.
Is there any way I can determine if the address I have on Kano is my old trezor address? I don't know what else I can do.
Maybe it's a caching problem. I've seen this on Ledger several times. Does your Trezor app give any option to wipe it's cache or something to force a recheck?