Hello,
I just tested your app, most of the parts work just fine but I tried creating an account and it showed the message "Internal server error". Then when I tried logging in I found out that my account was indeed created and it was just a wrong error message. Next I tried verifying my email and when I clicked "Send OTP" it showed the error message "Internal server error". Also I didn't receive any OTP.
About my app, please open it and try to use it as much as possible. Try to use core features like creating and editing a note, setting reminders, changing background colors for notes, starting overlay etc.Provide any feedback or bug report using this Google form:
https://forms.gle/DRQb9dCamXi5qjY46Thanks