1. Data encryption and storage service with a set date for data access no sooner than a specified date

2. Library/framework to synchronise mobile/desktop/micro app data with the Kotlin/Rast/Julia API 

At replacement inside of inquiry in parametres - references slash "/" on its code %2F, the OAuth server began to answer queries.

I did a test in another application. Error processing parameters-links within requests repeats itself.

Maybe the reason in incorrect processing of inquiries containing links with slashes in a system class %CSP.Request?

Dimitry, thank you for the tip! 
Now I see all the details when there are bugs.

But the question remains relevant. The server does not recognize the request of my client erroneous and thus gives out an empty answer. How to do tracing of calls for system classes if all goes "ok"?