Analytics : issue with reporting subscriptions

Hi,

 
For a couple of weeks now, we have been noticing that reports have been timing out and failing to run.
 
Daily Sales Alerts:
We used to receive report every single day of the week, whether or not sales alerts were recorded.
Now we receive them randomly, sometimes 4 times in a week, sometimes less.
 
Weekly New Leads Report:
We used to receive it every Sunday. We haven’t received it last Sunday (20^th)
 
Weekly Campaign Responses Report:
Data hasn’t been refreshed since December, 9. So we are receiving emails but with "old" data.

I have reported this issue today to support but I wanted to know if we were the only ones. Do you also have issues? Do you have recommendations for improvement?

Thanks

Cécile @ Talend