Hello Ajay, I'm sorry to hear you're having troubles. I'm trying to piece together your message and just can't understand what was the initial problem and how it spiralled in the data loss.
I get that you updated the app and probably after that you received an error about the lock and server update. I'm fuzzy on how it relates to master password.
At this point, I still don't understand what is the initial problem. Did the master password prompted to update the app? Or you lost the ability to sync, you updated the app and it wiped out your data? Or is there something else I'm missing?
You might still have the data at the path posted here if you have root.
Even if you're certain that the data is unrecoverable, could you please describe step by step what led to it? At least we could learn from your hard earned experience and try to prevent it in the future