NeetoRecord doesn't allow you to record "computer audio" or "system audio".
Sometime back we had the feature to allow folks to record "compute audio". Then we noticed that people would attend zoom calls and would record those calls. Since NeetoRecord has a generous free plan, one can record many such videos.
NeetoRecord is meant for recording your thoughts so that you don't have to attend a meeting. Recording zoom call is not what NeetoRecord is for. Hence we removed this feature.
There are many other software provides who allow you to record "computer audio". If you really need that feature then you can use one of those softwares.