Unable to get TLS certificate issued for a Tailscale node

I uninstalled Caddy completely:

Installed 2.5 following this guide:

Yet I see 2.4.5 when I run caddy version:

Preparing to unpack .../caddy_2.5.0~beta.1_armhf.deb ...
Unpacking caddy (2.5.0~beta.1) ...
Setting up caddy (2.5.0~beta.1) ...
pi@raspberrypi:~ $ caddy version
v2.4.5 h1:P1mRs6V2cMcagSPn+NWpD+OEYUYLIf6ecOa48cFGeUg=
pi@raspberrypi:~ $ systemctl status caddy
● caddy.service - Caddy
   Loaded: loaded (/lib/systemd/system/caddy.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2022-03-16 13:40:17 GMT; 8s ago
     Docs: https://caddyserver.com/docs/
 Main PID: 18066 (caddy)
    Tasks: 9 (limit: 2062)
   CGroup: /system.slice/caddy.service
           └─18066 /usr/bin/caddy run --environ --config /etc/caddy/Caddyfile

Mar 16 13:40:17 raspberrypi caddy[18066]: {"level":"info","ts":1647438017.6912637,"logger":"tls.cache.maintenance","msg":"started backgr
Mar 16 13:40:17 raspberrypi caddy[18066]: {"level":"info","ts":1647438017.6914306,"logger":"http","msg":"server is listening only on the
Mar 16 13:40:17 raspberrypi caddy[18066]: {"level":"info","ts":1647438017.6933014,"logger":"http","msg":"enabling automatic TLS certific
Mar 16 13:40:17 raspberrypi caddy[18066]: {"level":"info","ts":1647438017.6963093,"logger":"tls.obtain","msg":"acquiring lock","identifi
Mar 16 13:40:17 raspberrypi caddy[18066]: {"level":"error","ts":1647438017.6966279,"logger":"tls","msg":"job failed","error":"mew.tailne
Mar 16 13:40:17 raspberrypi caddy[18066]: {"level":"info","ts":1647438017.6969547,"logger":"tls","msg":"cleaning storage unit","descript
Mar 16 13:40:17 raspberrypi caddy[18066]: {"level":"info","ts":1647438017.697212,"logger":"tls","msg":"finished cleaning storage units"}
Mar 16 13:40:17 raspberrypi caddy[18066]: {"level":"info","ts":1647438017.7627392,"msg":"autosaved config (load with --resume flag)","fi
Mar 16 13:40:17 raspberrypi caddy[18066]: {"level":"info","ts":1647438017.7630439,"msg":"serving initial configuration"}
Mar 16 13:40:17 raspberrypi systemd[1]: Started Caddy.
pi@raspberrypi:~ $ journalctl -u caddy --no-pager | less +G
pi@raspberrypi:~ $ caddy version
v2.4.5 h1:P1mRs6V2cMcagSPn+NWpD+OEYUYLIf6ecOa48cFGeUg=

It’s as if I have two versions of Caddy running on my Raspberry Pi. Not sure how to untangle this just yet.