A few days ago active installs growth chart disappeared from the plugin's advanced view on WordPress.org. API that provides these data was disabled as well. WordPress Meta Team states that it is "due to insufficient data obfuscation".
I personally and the vast majority of plugin developers do not agree with simply disabling such an important metric. There is active communication in the
#meta channel in WordPress Slack.
Also, there is an open issue to bring back the stats. Please watch/join the discussion to support the fix.
As for the wpmetrics Active Installs view, without the growth stats, it will be less informative and it will be not possible to calculate actual active installs. Still, I hope the Meta Team will revert/fix the issue and we will be able to provide accurate data as before.