Some ads are not showing

It’s been a few months now that I’m always having a problem with some ads showing on my client’s website.

We still don’t know if the problem could be in the Google Admanager campaign or if it could be some configuration of the Ad Inserter itself.

Right now, there’s a campaign going on and it’s showing on desktop, but not on mobile.

The link I’m sending has a desktop ad unit and a mobile ad unit. On desktop it is showing correctly but not on mobile.

Can you help me with this?

The page I need help with: [log in to see the link]