Your integration with Dropbox is not working.
I have tried with different accounts and always with the same result: it asks for oath authorization, I accept it but then nothing. If I enter Dropbox, the following message appears in the connected applications tab:
"This application no longer has access to your files because you have deleted its folder. You must install it again for it to work again."
add this NOSQL database to able to store, Because some of the companies the NO-SQL solutions
A WordPress plugin would be very handy, something where we could see created backups, a download link and maybe even a restore link.