Syncing devices and files

Recently it has looked as if the syncing of devices and files has stopped working. For example my renewed Windows password on my PC is rejected by my Windows phone, notifications such at the phone battery status have not appeared, and file updates to my Android devices have not arrived. Yet in Settings I have everything switched to 'ON'.

I have just discovered the Syncing Centre, which not only shows no syncing partnerships, it also will not allow me to create any. Why? This is all new territory for me and various online articles have not been very enlightening. How do I get the full syncing services operating?

Hello

I sign in with a Windows account, using my Outlook email address and a password used for all my MS Windows apps including One Drive etc.

I sign in to my phone with a PIN CODE, the same as I used to use on my PC but a while ago the PIN option ceased to work so I use my Windows PASSWORD. Recently for some reason I was asked to confirm with my password and it was then that I found my updated password was not accepted on my phone. I don't know how to invoke a password request. If I did I would check whether my current password is accepted on my phone. I use the PIN to access my Android tablet too, and only use my Windows password online for specific apps such as Outlook, OneDrive. It occurs to me that maybe things are not synced to the Android anyway but are simply available on the WWW. I will need to check it out.

What I mainly want to sort out is why my Sync Centre does not do what it should, why does it say I cannot create Partnerships 'on this machine' and why does the 'Manage offline files' link not responding at all? It was suggested that I set up another profile to test if the Centre is kaput in that account too --- it is. Surely if the Centre is doing what it there for it is likely that problems with syncing can be dealt with there?

I have not found a relevant Windows phone forum, but anyway it would not relate to my key issue: how to get the Sync Centre to work on my PC.

Lumia 435

There are phone forums but I have not found any which discuss the issues I have.