Error the client can not update the password to a new one

[tecnopak]

Hi. For several days I noticed that in the option of my account as a client to update my data and change the password field does not take the change, the name and other data if you update but the password is the same I still can not change it.

I have not modified any file. and he does not show me an error either, he says updated data. but at the moment of closing session and trying with the new password it appears that it is not valid and entered the old one and with that it gives me access.

The URL of my store is https://zentenoshop.com