Hello! Could you please use this link to contact the support team and tell them about the bug?
https://support.my.games/rr
They will surely investigate the problem and help you fix it :)
Greetings! Thank you for your feedback. We keep track of our ratings, so it's very helpful to see what's floating and what's sinking. We will continue to work to make our game as enjoyable as possible for all of our players!