When a new team is created and subscribed, it has to be linked with a "Club/Organization".
This club/organization is a sort of additional 'filter' to define settings for the teams that are related to it.
As a user, you are related to one Club/Organization, so you are only able to see Teams related to your Club/Organization within your menu.
Please contact the key user of your federation in case you have further questions about this.
General info: user functionalities depend on the roles & permissions settings. If a certain functionality does not work within your user account, this will be because you don't have sufficient permissions for this.