Hi I'm the dev of this bot, thanks for your article!
The wallet can't be resized on Windows but if you use Linux you can resize the wallet to the entire screen if you desire (no idea why it's different depending of operating system).
The offers are removing 50 minutes before fixtures start to avoid exploit from an user who could watch the beginning of a match and decides to fund or not the smart-contract. It's a downside of using smart-contract but as advantage you are very safe when you use this bot, even if it went down you would be able to claim your gain. This delay could be reduced in future but for now I prefer to stay conservative, interests from takers and makers are both to be preserved if we want to make this platform to grow.
In play betting is not possible, professional bookmakers hire people to watch fixtures and constantly set odds in-play (they are helped with some algorithms of course). This bot is far from having enough volume to make such a thing profitable for makers and anyway smart-contracting would be too slow for that.