Please always post support requests in the main support forum, not in one of the sub-forums, UNLESS your problem is related to the .NET client dll, in which case you should post in FSUIPC Client DLL for .NET sub-forum, or for issues with FSUIPC7-Beta (for MSFS) in which case you should post in FSUIPC7-Beta for MSFS.
We cannot help anyone without any information. Nor do I support old versions. So:
Please always install the currently supported one or later before asking for help. The ZIP