Nationwide customers will only see 90-days of transaction history with Credit Card accounts in Money Dashboard. This is due to the programming of Nationwide's Open Banking system, which Nationwide have limited to 90-days due to a technical oversight.
Nationwide have provided the following,
For Credit Cards: We are currently experiencing an issue in which if a date range for credit card transaction data is requested, then the member's most recent actions will not be returned - this is planned to fixed in Q2 2020. It is possible for TPPs to retrieve these transactions by either: requesting credit card transactions by not supplying a date range which we will return the current transactions made since the last statement, or by sending a second request of up to 90 days of transactions by supplying a date range which will return transactions up to the last statement. Both of these responses will provide up to 90 days of credit card transactions.
Source: Nationwides Open Banking Setup Page
We are continuing to push to have this extented, as we feel that 90-days of transaction history isn't good enough for our customers.