Add-on developers might have noticed a recent reduction in their active daily users counts on AMO. This was due to large gaps in the daily stats where the daily user count for various days was 0. It’s a problem we encounter with some frequency, so this time around the AMO devs did some deeper investigation into the matter.
Some malformed update pings were causing the log parsing to fail, leading to the empty stats days. The agreed solution was to perform stricter validation on the data before it is processed. This means that some daily usage stats will be slightly lower than before. We’re only filtering out data that we believe is malformed, so it should be a negligible amount for all add-on stats.
The fix was pushed live yesterday, and the missing data has already been backfilled. So, all stats should be back to normal now. Please check your add-on stats on AMO and let us know if you notice anything strange.