Ads not displaying

[DavidDavies]

I set up campaigns, zones and banners a year ago and they've been running on my sites just fine but all of a sudden on the same day all ads stopped displaying on my sites.

It's not a script or server side problem because if I set up a new ad zone, attach banners to it and display that zone's ID on my sites the banner will display.

Is there a setting I've missed on the other zones? They're set to unlimited impressions and there's no end date.

Any ideas?

Thanks.

[andrewatfornax]

No, no immediate or obvious ideas, sorry.

https://documentation.revive-adserver.com/display/DOCS/Banners+Not+Delivering