Password change

Hi Sascha2309,

Welcome to the Apple Community, where some of us do our best to help each other :)

Your Apple ID is the account you use to access all Apple services,

such as the App Store, Apple Music, iCloud, iMessage, FaceTime, iTunes and more.

Apple keeps our accounts very secure for our own protection . ..(ie: privacy / financial etc.)

The one Apple ID user name and password is mostly used for everything Apple.

If you change / reset your Apple ID or Apple ID password,

you may then need to change it everywhere you use it.

There is another discussion thread (link below) on this topic

One answer says:

If you forgot the Apple ID password, enter the Apple (iCloud) ID,

and click Forgot Password. See if you can get a Rescue or Notification email option if necessary. 

https://discussions.apple.cohttps://support.apple.com/en-us/HT201232

OR

There is an article online from Apple Support that may help:

You can try resetting your password from any trusted iPhone, iPad, iPod touch

(or scroll down for Mac) from the link below::

If you forgot your Apple ID password, or have issues when you try to sign in :

https://support.apple.com/en-au/HT201487

Then here is:

What to do after you change your Apple ID or password:

https://support.apple.com/en-au/HT204071

For more help:

Apple ID Support Page:

https://support.apple.com/en-au/apple-id

If you still need help:

You might want to contact Apple for support and service:

See a list of Apple phone numbers around the world:

https://support.apple.com/en-us/HT201232

Hoping this helps you straighten out your long-standing difficulty :)