Globallink 520 not visible in VRM

Hello,
I am monitoring 10 Globallink 520 in VRM and one of them is not connecting to VRM.
The Globallink 520 is online with external antenna like the other ones.
Is it posible that Victron expert is looking in logging if my Globallink 520 is connected and giving data?
I have reset the Globallink more then ones but no connection with VRM.
Adding the installation in VRM gives a error.
The VRM ID is 58BF250428C0 please help me or give me a new one. :slight_smile:
Kind regards,
Sijtze