Update readme

README.md

@@ -2,6 +2,12 @@
 
 <small>It's not that new. This is just a cheap pun on the title of a [furry anime](https://en.wikipedia.org/wiki/BNA:_Brand_New_Animal).</small>
 
+Also keep in mind that B in BNAkkoma stands for 'bleeding-edge', **features can be added, changed or removed at any time!**
+
+If you are experiencing any strange quirks, make sure both your frontend and backend are up to date.
+
+If your software are up to date but the bug is still there, ping me on the fediverse at '@itepechi@fedi.itepechi.me'.
+
 ## What is this?
 
 This is a fork of [AkkomaGang/akkoma](https://akkoma.dev/AkkomaGang/akkoma/), with some opinionated changes to satisfy my needs.
@@ -17,6 +23,7 @@ The main differences between this and the upstream repository are
 - Added support to search for posts from people you follow, which is nice to have
 - These search extensions are configurable, so simply turn off if you don't want them
 - Includes some improvements to the initial configuration wizard
+- Added OpenSearch protocol support
 - Improved PWA support, sort of
 - Supports Podman quite well
 
@@ -281,6 +288,14 @@ podman exec -it akkoma-web \
   index
 ```
 
+### 9. Troubleshooting
+
+#### PGroonga search not working as expected
+
+Please make sure that you've applied all migrations using `pleroma_ctl migrate --migrations-path priv/repo/optional_migrations/pgroonga`, then set the options using `pleroma_ctl database set_pgroonga_options`.
+
+Read more at ['Switch to PGroonga'](#switch-to-pgroonga) and ['Change PGroonga indexing options'](#change-pgroonga-indexing-options).
+
 ---
 
 ## Akkoma