There are more cases that relates to having double account in gambling site and all the accounts automatically close down,
but for my time here never came across any exchange issues that relates to double.
Do you think gambling sites should be allowing double account?
This seems to be not allowed for some casinos because it seems to interfere with the comfort or security of their casinos, besides that casinos prohibit this must have a definite purpose for their security and their visitors. Although there is no certainty that this does not seem to be allowed by the casino, especially with casinos that have a good reputation that maintains the good name of their casinos.
Apart from that, currently there are many local online casinos circulating in my country, sometimes I myself have an account on a particular platform and when I get bored I register again at that casino, it won't work if I use the same username, contact number, and email, only for me it works when I register with a different username, contact number, and email address even though I register with the same account name (bank) but a different bank so only the account name is the same, but it seems that this is included in having a double account, it's just that there haven't been any problems.