I had a fair bit of trouble like this while restoring as well.
One thing you can try is to tail the lnd.log and see if you can pick out any issues.
Navigate to (I think) \umbrel\lnd\logs\bitcoin\mainnet and run tail -f lnd.log
If nothing stands out, another thing you can try is to force your node to rescan for transactions (this is how mine ended up showing at first, and made me more confident).
When you do this, try watching the lnd.log when it is scanning, and again see if anything stands out.
Ultimately, even though I started seeing UTXOs recognized, I still had issues and had to rest my user data on the node one more time (Seed and username/password). You can do this without downloading the blockchain again.
Can’t guarantee any of this will work. It took me about a week of trying things like this to get a clear win and get all of the funds off.
Anyway, if at any point you see some transactions, but not the funds from your channel closures, you can always run the SCB procedure again to see if anything changes.