I just tried to create a Postman Collection and I wasn’t able to add any requests to it because it was created as read only.
I did a bunch of Googling and Githubbing to no avail.
I happened to go to my accounts profile page and noticed this at the top. A message that my email address had not been verified.
I had a hunch that the collections were being created as read only because I was using a non-verified account.
I verified the email address.
I created a new collection…and boom it wasn’t read only.
So, if you create a collection and it is read-only, then make sure your profile is activated.
I filed a bug with Postman here: https://github.com/postmanlabs/postman-app-support/issues/6187