Sudden problems with LINK on rekordbox and XDJ-RX

Since 2 days ago im having problems with the LINK between Rekordbox and my RX. Before all was working fine.

When I connect Rekordbox to my RX, Rekordbox gives the LINK button. When clicking on it I see in Rekordbox that the green icons apears with the 2 players from the RX. On the RX the button "Rekordbox" is flashing for a few seconds. Normaly the data appears on the RX. But now I don't see any data.

I work on a PC with Windows 10.

I tried:

- updating my RX to 2.1

- Disable the Windows firewall

- Diable the router firewall

- Tried another router

But all with no positive effect.

Can anybody help?

Thanks, Erwin