Fetch a report based on various parameters such as project, functions, quizzes, paywalls, and time ranges.
This endpoint supports a variety of functions and filters for detailed analytical reporting.
Available functions:

• totalSubscriptionsAndRevenue: Returns total subscriptions, total revenue, charged revenue, LTV, and average subscription amount.
• subscriptionsByDay: Provides subscriptions and revenue trends over time.
• subscriptionsByPriceId: Groups subscriptions by price ID and provides revenue and LTV details.
• subscriptionsByCountry: Groups subscriptions by country and shows total revenue.
• subscriptionsByStatus: Breaks down subscriptions by status (e.g., active, incomplete, etc.).
• dailyCompletionRate: Tracks completion and conversion rates by day.
• quizFunnel: Provides detailed funnel step conversion rates for quizzes.
• paywallConversionByDays: Tracks paywall conversion rates by day.
• paywallFunnel: Shows the paywall funnel conversion breakdown.
• subscribeToInstallRate: Tracks the rate of rhe percent of users who purchased subscription and installed the app after (meaning - requested subscription status using API).
• utmReport: Funnel metrics grouped by UTM, country, or platform.
  Default grouping is campaign UTM (source_campaign_medium and related orders).
  Pass utm_grouping=country for a visitor-level country breakdown (user_country_code)
  or utm_grouping=user_platform for a visitor-level platform breakdown (user_platform).
  Both visitor groupings honor quizzes[] and the date range; rows are sorted by users_count descending.
  Visitor metrics (users_count, quizes_started, and earlier funnel steps) use quiz engagement.
  Subscription/revenue columns still attribute via subscription.quiz_id.