Hello m_u_h, how are you?
My name is Anthony Hu and I am part of the wolfSSL team.
There are many reasons why openssl might not be using wolfengine. How are you performing SSH and TLS? Are they separate applications? If so, then it could be that the application doing TLS was built with static libraries in which case that particular application would not support engine usage.
Can you please share details about your applications? For example, how are they built?
Also, here at wolfSSL we love hearing about how our software is being used. Can you let us know about your project and what your goals are?
Warm regards, Anthony