Every week (sometimes every day) I get some new treat.

Tonight it was "unable to sign in". I see that periodically on a hotel site which is probably the largest in the world.

Sometimes it just forgets who I am. Sometimes it shows no availability for a hotel for a full month. Next day it's available.
This on top of the major devaluation of points by an increase in cost. Yes, I came over from Sheraton and will be leaving at the next reservation. Not happy.