How do you know if the albums you want to appear in your collection are favorites or not?
I'm not sure after all. Since the last successful refresh couple of days ago I had added 7 albums via official Tidal app and I got 7 errors. So I made an assumption. Now as a test added one more but the amount of errors was still 7. Regardless, the recently added ones don't appear in Strawberry collection but that might be because the refresh never finishes properly.
On the other hand, I observe that the search for the complete list of albums is done in a very short time, while the one for covers takes a long time.
That has always been the case. The covers take a long time since it actually downloads them as image files.
On the other hand, you cannot start a search from Strawberry, nor from artists, albums or songs with the Tidal HiFi application open and playing on the same PC because Tidal immediately blocks Strawberry with the warning "The token has expired on time (401) ( 1103)".
Can't replicate this issue and it sounds like a separate issue.
So I delete Tidal Hi Fi, scan with Strawberry, playing a song from my collection. The previous warning no longer appears but the search does not give any results.
I don't understand why this warning appears when I have used a token extracted from my android mobile. The same thing happens to me with the other token.
Search works for me normally. My token is from an old Android version too (this) and I fetched it months ago.
But I still doubt your issue is the token since login works and that means it is a valid token.