How to assign discover server to target

Hello, I would have question regarding Symantec DLP 15.0.

We have three tier environmet instalation, which started only as Endpoint Prevent. Later licence was added for network discover.

Now I wanted to setup discover target, but scan status is UNASSIGNED and it looks like it doesn't see any discover server. Detection server has only Endpoint type/role.

Should I delete Endpoint detection server an re-add it as Networ and Endpoint. Will be agents connected to Endpoint now affected anyhow after re-add?

Or should I add same server (address) with network role/type?

Or is reinstalation of detection server needed?

Servers and detectors page overview is attached.

Sorry for stupid questions, I'm totally new to this product.

Thanks for answer

Jan