Q: Why doesnt allow me to buy more icloud storage? It says i entered the wrong password when i click buy but i know i put in the right password, please help!

Greetings Erick07,

Welcome to the Apple Support Communities!

I understand that you are receiving a password error while trying to upgrade your iCloud storage. To begin troubleshooting this situation, I would recommend reading over and working through the steps in the attached article below. 

Get help using iCloud storage - Apple Support

If the issue continues, I would suggest changing your iCloud Apple ID password to ensure that the correct password for the correct account is being entered. 

Change your Apple ID password - Apple Support

Cheers