The activation of TaHoma V1 (square-shaped) is no longer possible.
However, if a gateway has been partially reset (disassociation of an account), a new account can still be created. For example, if you are moving out of your TaHoma V1 connected house, you can dissociate your account (with the support of customer service teams) and allow the next users to create their own account (the products remain paired).