Accessing File using aspx

Hello Everyone,
I am very new here and I am happy to meet the most experienced in the house.

I am trying to access the document using aspx API but which was not working but I later discovered that the version installed (M‑Files Online Version 25.10.15296.12) does not have REST and COM API installed even though it was a full Installation we downloaded.

I have been trying to see how I can get a complete installer that will contain services like COM API, Server DSK, REST..

If I am wrong, please correct and put me through.

Thank you