Most of my problems have been with credit card reward programs - which isn't surprising as they've made the most changes to their login and retrieval procedures.

I haven't been able to retrieve the following for a while.

Capital One Rewards
Chase Rewards
Citi Thank You Network (like everyone else)
Discover Cashback

but also

Airmilesmart
Ebates
Radisson (probably because of their recent major program changes)
Upromise