I have android devices and two computers, if I change my master password on one does it change for all? or do change each device? I have had difficulties befo

I would like to change my master password. I know the password for all my devices. I am just wondering if I change master password on one device does it change it for all or do I change the master password on each device. I have had difficulties in the past. I changed master password on one device and others didn't work and wouldn't change.... I guess my question is how do I change master password on multiple devices. Thanks, Keith Long