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hey @okoyecb I asked in the Discord and this is the answered I got:

that is because there is a function to prevent bots to create hundreds of accounts. There is a easy workaround: use another front end like openledger.io rudex.org or easydex.net just for account creation. All these front ends work the same way and are interchangeable. I think the "one account per ip" resets after a certain time too. So waiting might also do the trick.

I would recommend you to open account using easydex.net

As soon as you have your account name, let me know so I can send you your rewards!