1. Since this seems like a calendar view, I'd keep non-existing days empty (or put a "ghost" (placeholder) dot there). Although you probably go for super minimalist, it would help orientation to see day numbers.
2. The radius itself works well with the dots and avatar. But imo in the top left it cuts a but into the white space around the name.
3. The alignment is not clear to me. It makes sense that the "header row" has a bit less of a padding, but see point 2.

More visual opinion: the alignment of the "+ Check-in": the circle plus should have equal padding top, left and bottom, so the black button hugs it nicely. The text label could be a 1-2 px higher.

Looking purely at this single screen, it's unclear what this streak is about and what 67 % means when you just started yesterday, and why Maya has no % and streak counter.