Marketo failed in sending subscribed reports some days

[NCHAN]

I subscribed some Marketo Program Performance reports for my colleagues. But Marketo does not send these every day very randomly. 

For example, I took this screenshot on Jul 15 and I found Marketo sent reports on Jul 13th but not on 14th. How can I solve this problem?

[Darshil_Shah1]

Well, Marketo does not allow user-defined send time for the report subscriptions just yet, typically the report subscriptions are sent out during the night/early morning time. Given that the report subscription was not turned-off during the 14th July send and the recipient(s) did not unsubscribe from the report then things don't seem to add-up here as the highlighted report subscriptions seem to be set correctly to send the report daily. I'd honestly resort to logging a Marketo support ticket to find the reason as to why the report was not sent on 14th of July.