Since when did bitsler block US players?
Not sure when Bitsler started to block US players but its in the terms and conditions
6. PROHIBITED USE
6.1. BITSLER is intended for the user's personal use. The user is forbidden to wager for any other reason than their own personal entertainment.
6.2. Restricted and allowed countries
The following restrictions and regulations are applied :
Blacklisted Territories: Netherlands, Curacao, Dutch Caribbean Islands, France, USA
Please note that it is forbidden to play all BITSLERs games in blacklisted countries mentioned.