No need to break your head in debugging. Easier is to do a fresh install again as follows. I have used this method lot of times without any problem.
STEP 1 of 2 - PIAWARE
Re-image microSD card with latest piaware 3.8.1 sd card image. You will have dump1090-fa, dump978-fa, and piaware data feeder pre-installed
Direct download:
http://piaware.flightcdn.com/piaware-sd-card-3.8.1.img.zip
To Configure, follow instructions here:
Howto : Piaware SD card image 3.8.0 Quickstart Guide
STEP 2 of 2 - FR24 FEEDER
Run following bash command to install FR24 feeder
sudo bash -c "$(wget -O - https://repo-feed.flightradar24.com/install_fr24_rpi.sh)"
Above script after installing FR24 feeder starts configuration by asking email or receiver type. At this point dont enter anything, instead, break the process by pressing Ctrl+C.
Now open file fr24feed.ini
sudo nano /etc/fr24feed.ini
Delete all its contents and copy-paste contents from below (replace xxxxxxxxxx by your actual fr24 key)
receiver="beast-tcp"
host="127.0.0.1:30005"
fr24key="xxxxxxxxxxxxxxxx"
logmode="1"
bs=no
raw=no
mlat="yes"
mlat-without-gps="yes"
Save file (Ctrl+O), then close (Ctrl+x)
Now restart fr24feed
sudo systemctl restart fr24feed
Wait for few minutes, then check status
fr24feed-status