Certain albums not syncing to portfolio

Lightroom (vs LRCC)

Lightroom version: 8.1.1 MAS arm64 [ 20250115-0114-622c9f1 ] (Jan 14 2025)

Mac Studio \ OS: Sequoia 15.3

I have a number of albums on my website: www.fredspictures.com
When I make an update to one of them in Lightroom, 80% of them successfully 'reset from lightroom', but the others do not. 

Instead, I am forced to delete the album and resend to portfolio in order for it to reflect the update.

Why is this??

I have tried incognito, Chrome, Firefox...no change.