Can't login in webmail

[sponch]

Just configured incoming mail with 1 mailbox and made myself the owner. Unfortunatly I can't access my mailbox via webmail.mydomain.xy
Try to login with the created emailaddress and the password of my cloudron account. doesn't work. Generated app password (I'musing 2FA) also doesn't work.
I havent installed a mail app in cloudron just want to access the webmailer.
Any idea?

IMAP/SMTP Login with mail client is working btw (with app password)

[nebulon]

Which webmail app have you installed?

[sponch]

omg....just checked the DNS again.... the "webmail" record wasn't by cloudron.... it's directing to the hoster's web mailer (same that cloudron uses)....
So for me: without installing a webmail app from the cloudron appstore this doesn't work, right? As I'm on free (at least with that instance) I've no free app anymore.
Sorry...my mistake