yes it was against the casino's TOS, only one IP per account is allowed and in this case your husband created an account with the IP and when you created another account the casino system marked 2 accounts on the same IP in this case the casino blocks both accounts, One thing I've always been telling people is that gambling should not be seen as a source of income or a means of getting rich quick, your husband had not been blocked, by being limited he could continue betting following the casino's rules which are not In this case, it would be to comply with the limits established by the casino and you would not have any problem because you were already winning and would still be playing, albeit with a low bet value, but the greed of wanting to win a lot led you to create another account.

and it's funny that someone came to this forum yesterday to talk about a problem similar to the one you reported here and as you are also talking about stake, I assume we are dealing with the same person, and he is telling similar stories but with some changes that leads me to think that the reason they are limited must be related to the game provider having detected some cheating or suspicious behavior which is why they limited the amount of bets, I suggest you be honest about what really happened, being honest and sincere helps a lot to other people realize what the problem is, a reliable casino like stake is always cautious with the measures they take so as not to commit injustice, I highly doubt they would limit someone's account without having a very strong reason