Hello TTN-User,
how can i change my primary email address?
Thank you
johncom
Log into the main site
Look at your profile (drop down from user name top right: “My Profile”)
leads you to https://www.thethingsnetwork.org/u/”your_user_name”
click on the edit pencil next to “your user name”
select account settings under your profile picture
edit your email address there 
(I hope!)
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Who?
Please don’t shout in the subject title.
No point obscuring information that appears in your post.
Or providing screen shots for pages we can all see.
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*sorry
How can i create a secondary email addresse?
OT
How can i edit my first posting?
You don’t after anyone has replied otherwise it will be reverted so that there is no loss of context in the replies.
There is no entry box for a second email address.
So you can’t.
If there are problems with the ttn account, who is the contact person for deleting a gateway and node?
No one. This is a free to use service that does not have a support channel for administration of the servers.
This is X/Y issue. Perhaps if you explain the problem rather than ask if a solution is available we can help faster.
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I don’t have at this time a problem, i’m learning ttn.