Demo's source is not supported

[intefa]

[akiver]

The "Source" column shows a ? which means that the source of the demos is unrecognized.
I guess they come from a private server?
Please read this doc - you can change the source (right-click on the demos) and analyze them, but if the demos come from a non supported source it may not work correctly.

[intefa]

After reading your tips, I studied it, changed the source to Valve, and then I can analyze it normally. Thank you for developing this software, which makes it easier for me to edit videos