Authentication issues have been resolved! We have been experiencing a great rise in bot traffic recently so this was our anti-bot protection acting too aggressively against our own login mechanism... But the good news is that logins should be restored now!
No updates needed.
The 2.3.10 update has been released, it may take an hour for it to reach every App Store! Once 2.3.10 update is available to you, please update your app through the App Store and let me know if it works now.
https://apps.apple.com/us/app/tetrify-text-yourself-notes/id6447967703?l=da
tetrify is designed to be its own app, mainly to allow for stuff like checkboxes inside messages, multiple text yourself chats, greater customisation, etc. SMS input might be possible eventually but that’s far on the roadmap.
SMS is also a lot less secure... so it's not exactly something worth encouraging for private notes.