P.S. Still collecting BFG boxes whenever I can. I am close to 200 BFG
It seems to me that a few active sessions from different devices are not a violation of Betfury's rules. However, I wouldn't be surprised if their security system sees this as suspicious activity. Therefore, this may be one of the reasons why you sometimes get logged out on their platform.
Betfury supports login on a certain period of time. Your account will automatically logout if you are offline for a certain hours. I’m using only one device and my account automatically logout wheneverI check it 24hrs after my last session. Changing device every login is really not a violation of ToS even on other casino assuming you are using same ISP or same country IP on all your session. Security will just question you if you are logging in on different country IP with different device.