Extension Analytics Displays unreliable information

Hey guys,

Lately, I’ve been launched an extension to twitch.
Since then I’m looking about the number in the twitch extension analytics, and something looks not right.

When I’m looking about my metrics (for example) over a week,
I will see one number, while when I’m counting the sum of each day I’m getting different numbers.
For example:
Uninstalls: 56
count of days: 48.

Also, The number that I see seems not right, for example, “Uniq viewers” seem to be not right. How do you count “Uniq viewers” that saw my extension?
(Only logged in users?)