Since that topic was a bit outdated I had to do some manual stuff mentioned in the comments to get FTL working.
Anyways, Pi-hole is working correctly (blocking ads) but I don't have any stats on the /admin dashboard page.
When executing: tail -F /var/log/pihole.log I also don't see any entries besides some startup info.
I have read quite some help topics (all pretty recent, since FTL update) about people having issues regarding the statistics/dashboard page but i'm still unable to get the stats working.
Any help is much appreciated. Anybody has an idea on how to fix this or how to debug further?