The App Says No Account Found but You Just Created One
You made an account, you typed everything correctly, and the app still says it cannot find it. This is a common one and it almost always comes down to which account you actually made.
The most likely reason
Then check these, in order
Check the email for a typo
Check you are not signing in with a username when you registered with an email, or the other way round. Both work, but only the one you actually set
Check your inbox, including spam, for our confirmation email
Try signing in on the website rather than in the app
If it works on the website but not in the app
Sign out of the app fully, close it including the tray icon, then open it and sign in again. If it still refuses, send us a message from the support bubble at the bottom right with the email you registered.
If you signed up with Google
An account made that way may not have a password set for direct sign in. Use the password reset link on the website to set one, then sign in to the app with it.
Please do not make a second account
It is the natural thing to try, and it usually makes it harder, because any purchase you made sits on the first one. Tell us instead and we will find the original.
Related: Cannot log in, Creating an account.