Hi. I cannot speak to your PW issue, but I can tell you about alternate dictionaries:
The Mirriam-webster collegiate is good, and is reasonably priced at $11:
https://www.amazon.com/Merriam-Webst...ary+for+kindle
I also have the Webster's Third New International Dictionary Unabridged, which is huge. It is expensive at $55, but occasionally goes on sale (I got my copy for $14.99 last November), so stick it in your Amazon wishlist and watch it for a few months.
Another alternative is The Collins English Dictionary, which is similar in size to the one above, but much cheaper at $4.99. However, I have not personally tried it yet.
https://www.amazon.com/Collins-Engli...t_sims?ie=UTF8
I like to have a few dictionaries on my Kindle, not just because one is necessarily better than another overall, but because sometimes seeing multiple definitions adds more perspective to one's understanding of the word. I hope this helps.