Roon has stopped working on my android tablet

I have a problem, for a few days Roon for Android no longer detects Roon Server.
For over a month everything has been working perfectly.
What happen?

system: intel xeon processor; 16 GB DDR4 Ram; M.2 SSD; Win 10 Pro
Music Server and Tablet are configured with Static IP;
One audio device via ASIO Driver; when I start the App from the tablet, I only see a black screen. No core is detected

Hi Marcello,

I have moved the post to the support section. Can you please fill out the requested information for a support topic I have pasted below. Thanks!

Roon Core Machine

Networking Gear & Setup Details

Connected Audio Devices

Number of Tracks in Library

Description of Issue

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