Nextcloud Mail does not work

Ich have a Problem with nextcloud Mail. I opened the right ports and everything. I dont know what to do. The number is the same as my mail app but the mails do not arrive. What schould I do?


Did you configure IMAP properly?

Okay so. Ive tried these things that you send me and these are the errors that the protocoll gave me. Sorry for being so weird, I‘m really stressed out.


Please use the correct “IMAP-Benutzer”. - See the linked guide above.

Username: This is usually the name of your iCloud Mail email address (for example, johnappleseed, not johnappleseed@icloud.com). If your email client app can’t connect to iCloud Mail using just the name of your email address, try using the full address.
Password: Generate an app-specific password.

Yeah I tried both of them. Neither one worked. The nice thing is that the number is always the same as my mail app, but there I can read the mail but i dont get it in nextcloud mail