NEVER change your Apple ID password. Complete hell hole.
@scientifics it's been a nightmare. iMessage wouldn't accept the new password, various other app issues as well.
@philbowell It gets even more complicated if you have two-factor authentication set up on your account. You need specific passwords for every app that interacts with iCloud/Mail etc
@stefp yeh, I have it but have been mostly using the stock apps lately. I'm sure I'll find some that need changing in the next few days though. Always the way.