Thank you so much for your tool. I have additional questions that are not outlined in the docs:
1. How many scores can be submitted to the board in total?
2. When the max submittable scores are reached, what happens when you submit a new one, what happens with the old scores?
3. How is the unique-user-identifier for the user made? Does it read the smartphone-ID (which would mean the user would have to grant necessary permission)?
4. Is there a chance of collision between user identifiers?
Things I have found out myself:
Username character limit is 127 (visible in the source code).