Thanks for posting about this.
The week starts on Monday in Strava, and it's not possible to customize this.
Goals may take a few minutes to update on Strava after uploading an activity. If you're still noticing a problem, we'd be happy to look into your account and see what might be going on.
Please submit a support ticket and we’ll be happy to investigate further.
Previously looked for that. Don't believe it is there, Just had a look again, can't see anything. But, I do also have another view where it's just not counting properly. Think I'll hit the support pages