Transactions missing on underlying card

It appears that some of my Curve transactions from the last week or so were never charged to the underlying card. Out of 5 transactions made using the same underlying card, 2 are showing as authorizations on the underlying card but there is no sign of the other 3. No authorizations, no reservations of available credit limit.
I’ve also noticed Curve transactions recently have been in pending status much longer than usual. They used to complete within 1 business day but some are not pending for many days.

All transactions posted on the underlying card yesterday. The oldest one took a full week. Unusual but all good now.

Yep, noticed about a 5 day or so delay here too.

Had similar experience on all transactions made on 1st May