Anyone out there who could help with Fediverse Applications behind an Apache Reverse Proxy?

To be more specific - I have been trying for days to get Epicyon running on my server. Installation was easy and it is running, just not completely. I cannot follow people or accept follows from others and proxying is the most likely culprit (I'm seeing 400 and 401 errors in Epicyon's logs)

The Installation Manual describes how to set up a nginx Reverse Proxy but I already have Apache and cannot change that. I do run other services using it as a proxy though and these all work as expected.

I'm out of ideas and would appreciate any help translating from nginx config to Apache. Please Boost!