Issue Wrong traffic stats

[ties]

Server operating system version

Ubuntu 18.04.6 LTS

Plesk version and microupdate number

18.0.66

I'm running Plesk 18.0.66, and I'm noticing that my traffic stats are wrong (though not related to this specific version). My traffic indicator only shows around 13 MB of traffic this month, but when I look in the Apache log files I see lots of entries of sessions that downloaded +100 MB files. I've checked my settings, and the traffic stats should count all outbound traffic.

Using PHP 8.3.15 on both HTTP and HTTPS.

Any ideas?