One of my Google App Engine application somehow is missing in the Google Developers Console. I am sure it was there before.
Now If I click on the link from the Google App Engine / Application settings page, then it opens the page and returns the error You do not have sufficient permissions to view this page
.
I am the only owner of GAE app and trying to access Google Developers Console under the same account.
How should I fix it?
The way to contact Google support would be to go to their PIT. This is the link. If there is a valid problem with your account, I believe they can contact you on there privately to get to the root of your issue.
As to your specific problem, I would try logging out of everything, trying a different browser, with both the new console and the old one.
I also encountered the same problem just now. It kept complaining "You do not have sufficient permissions to view this page" when I was accessing it on Chrome.
What I do is just switching to use Microsoft Edge with no Google account signed in. It works! I can now access the Credentials page again. =)
p/s: It's quite funny to have Google products work on Edge but not Chrome. =P
Actually there is a permission tab along with others(Overview,Api Auths) CLick on permission and in checkbox for your email as owner check it . It worked for me
have you tried accessing App Console with a Google Chrome incognito window ?
Check that billing configuration is OK or credit card not expired.
Regards Paolo