My husband has passed away and I cannot access iCloud because I can’t change information and no password works. Do you have a solution?

Well … it’s perhaps unfortunately too late for you, but it’s already been fixed w/ “Legacy Contact.”

If your husband didn’t designate you; might he have designated another individual? His pre-designated executor perhaps?

However … assuming that doesn’t apply to your situation, there is still a “paper method”available which Apple has provided for years.

How to request access to a deceased family member's Apple account - Apple Support

Contact Apple. 

How to request access to a deceased family member's Apple accounts - Apple Support.    *

Apple ID - Official Apple Support.   -

Contact Apple for help with Apple ID account security - Apple Support.  *  (Link doesn’t always load)   

Get Support    -  Work through the screens to get a chat option. 

Apple Support schedule phone call.  -

Apple on Twitter-  

Messages chat with Apple