Could you please open the spacedesk Driver Console (just click the spacedeks tray icon in the task bar), click Diagnostics -> Save All Information.
Saving all information will take a few seconds, then please send us the whole folder which contains all the diagnostic logs collected.
Please right-click the folder -> Send to -> Compressed (zipped) folder, then attach the *.zip file on your next reply.
By the way, can you also tell us which spacedesk Viewer app are you using? Android/iOS/Windows/HTML5?