Author and Title are both correct.
Code:
calibre, version 4.0.0
ERROR: No matches found: <p>Failed to find any books that match your search. Try making the search <b>less specific</b>. For example, use only the author's last name and a single distinctive word from the title.<p>To see the full log, click "Show details".
Running identify query with parameters:
{u'authors': [u'Vince Flynn'], u'title': u'Lethal Agent', u'timeout': 30, u'identifiers': {u'asin': u'B07MPZB5B7'}}
Using plugins: Amazon.com (1, 2, 10)
The log from individual plugins is below
****************************** Amazon.com (1, 2, 10) ******************************
Found 0 results
Downloading from Amazon.com took 1.24765706062
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36
Server: auto
Making google query: https://www.google.com/search?q=B07MPZB5B7+site%3Awww.amazon.com
Plugin Amazon.com failed
Traceback (most recent call last):
File "site-packages/calibre/ebooks/metadata/sources/identify.py", line 47, in run
File "site-packages/calibre/ebooks/metadata/sources/amazon.py", line 1386, in identify
File "site-packages/calibre/ebooks/metadata/sources/amazon.py", line 1318, in search_search_engine
File "site-packages/calibre/ebooks/metadata/sources/search_engines.py", line 234, in google_search
File "site-packages/calibre/ebooks/metadata/sources/search_engines.py", line 68, in query
File "site-packages/mechanize/_mechanize.py", line 238, in open_novisit
File "site-packages/mechanize/_mechanize.py", line 309, in _mech_open
httperror_seek_wrapper: HTTP Error 429: Too Many Requests
********************************************************************************
The identify phase took 1.42 seconds
The longest time (1.247657) was taken by: Amazon.com
Merging results from different sources
We have 0 merged results, merging took: 0.00 seconds