There are 3 possible reasons for the Actions tab to be grayed out:
Financial year is history.
The period that the bank rec is in is closed for the financial series.
There is no open bank rec for that month (Trx – Fin – Reconcile Bank Statement) should have two dates filled in.
In our latest releases, additional messaging to guide users has been added within the main screen, if one of these required setup items for the bank rec process is missing.