Thx Garima, I thought it had worked....
On the iPad, we had success, but now, when I look at settings, I am asked to set up sync again, only this time, even though it connects to dropbox (using the same pw.used on OS)), it states the sync error password of data on Dropbox is required . On the iPhone XR, I had previously deleted the app. So I reloaded it from App Store and it has noewasked for pw of data? What is that (for both iPad and iPhone?
Now, the MacBook Pro won't function - it won't accept the master password that worked on the other 3 devices!
I hope you can find a solution for all devices!
Thanks
Sim Goldblum