I’ve never used git. Many times I download the source code and then use it
my IDE: Visual Studio. Or I use NuGet packages.
Now I have a problem with one of the API’s on GitHub and need to report an issue to resolve the problem but there isn’t any way to report the issue and I can’t find any link or button.
What should I do and how to report the problem?
The mentioned API is “InstaSharper”.
No, you posted a link to this repository seven comments up the thread. The person/s who were maintaing it have decided to turn off the ability to report issues, probably because they are not developing it so cannot support it. If you need to change something, the only thing you can do is fork the codebase and make the changes yourself, or find someone else in the same position as you who has already done that.