Got a letter from Coinbase:
Hi there,
Thank you for contacting Coinbase Support and our apologies for the delay in responding.
As of August 22nd, it was decided that functionality for all Oauth applications, both approved applications and those pending approval, would be disabled as we can no longer provide support for these applications.
We understand that this may be frustrating, especially with regards to the lack of communication over the disabling, but it was a decision that we had to make due to the change in levels of support that we can provide.
At the moment it is not definitive if Oauth applications disabling will be permanent, but if there are any changes, those changes will be communicated.
We apologize for the inconvenience that this causes, and we appreciate your understanding.
Best regards,
Coinbase Support
Anyone get this letter? What are others using?