Are you still encountering this? When we deploy updates there is often a short window of time where it is not out in every region, and some experience temporary login issues. Let us know if you are still unable to enter the game!

You can consider fully uninstalling and reinstalling the app as well. 

Hi to any Tenno still experiencing this! If you are looping on Initialization, can you please head to the App Store and confirm you are on the latest build? If you are not, it will say "UPDATE" beside Warframe on the App Store. 

If you are looping, you should get a pop up notification prompting you to visit the App Store and update, but some players may not be getting this pop up.