Smart tv series k. I can not be Develop. Help me please

[chuspi]

First of all, greetings and congratulations on the forum. I am new here.
I recently purchased unsmart tv 32 "K. series is not the way to put it in Develop mode, because I ask email account and does not enable the ok box, because it has no email format. It would be helpful to you to give me some idea to leave my ignorance.