In other words, I claimed around 50 codes that week, haha. And I didn't get banned. Obviously I am not a bot so at least they can still makes somehow the right decisions.
50 bonus code claim within a week without getting the ban proves that there is something wrong with the activity of those users who are receiving the ban.
Banning those who are using automatic code claimer bot is reasonable of course but if there are some people who get banned because claiming too many codes while they claimed it manually, then it is not good at all.
I haven't seen a lot of complaints about receiving ban from bonus code claim at Stake. But a good number of users have faced this. I had seen some comments on Stake twitter posts a few weeks ago. I believe a lot of Stake user tries to maintain the minimum weekly wagering requirement to be eligible for all the bonus code and they do it continuously. And only those users are receiving such ban.