Yes, if you get to the point where you request the OTP you've successfully logged in. If you need any further assistance you'll have go through Minecraft Support.
When sending an OTP for legacy accounts you need to provide the e-mail for the account. If the provided e-mail doesn't match the registered e-mail you get the response above.
If you don't remember the e-mail you need to contact Minecraft Support
This has now been fixed.
Thanks for reporting!
Thanks for verifying!
Is this still ongoing?
There were some changes affecting the session service recently, but it should be back to normal now.
This has now been fixed. Thanks for the report!
Payments are no longer available on account.mojang.com
We made some changes to the backing storage configuration and didn't take this use case into account.
The skin files should now be available again.
Is this still a problem? We had a shorter outage of one of our backend systems at the time of this report.
Should no longer be possible to close the dialog using ESC
There was a problem with the skin uploading functionality on minecraft.net which affected IE10 and IE11. The issue was fixed on friday, june 3rd, so this should hopefully be resolved now.
https://feedback.minecraft.net/hc/en-us/articles/49175370527501-Minecraft-Bedrock-Edition-26-52-Hotfix-Changelog
It’ll probably be available as an update in the next few days. Apple just needs to do their usual review/checks before they allow new apps and updates on the App Store.